A few ideas.
1. Get married any time other than Friday night or any time on Saturday. Possibly even avoid Sunday if you can. RP and I were married on a Monday afternoon (Memorial Day, 1992) and it was a LOT less expensive.
2. Only use flowers that are in season. I see you're going with wholesale, that's great! But you can cut that cost even more by going with seasonal. That means tulips if it's now, holly and the like if it's in winter, etc. Also, consider supplementing bouquets with a lot of greens, or just go with one flower. A one-flower "bouquet" can be quite lovely for a bride, assuming the flower is perfect and I mean PERFECT. Centerpieces can be just a plant (we had ivy plants. Ivy stands for fidelity, it was a nice touch) or even nonfloral in nature. You can do pretty bowls filled with colorful candies or origami if you know how to do that.
3. Photography/videography is expensive. We don't watch our video too often but we do look at the photos on occasion. If you're going to put money anywhere, put it into the photos and skip the video.
4. Dresses are cheaper if they are from last season. Some places do one-night rentals of formal gowns. That probably won't work for your gown but it might for your bridesmaid(s).
5. I was at a wedding once which was "catered" as a potluck by the bride's female relatives. See if your church will allow something like that. If not, see if you can do a tea or similar small meal as opposed to a big deal all-out caloric blitz. Afternoon weddings mean lunch. Evening or night weddings mean multi-course meals. Obviously, the former is far less expensive than the latter.
6. Keep the wedding party small. You should give a small gift to everyone who's in the wedding (we gave wallets for the guys and purses for the gals; I received a Tiffany key chain when I was a bridesmaid at my brother's wedding. That kind of thing) so of course it's less expensive if you buy for only two or four attendants rather than eight or so. Don't force yourself into an even number of attendants or feel obligated to even up the number of men and women. It's not important.
7. Shoes, hair etc. for your bridesmaids does not all have to be uniform. After all, unless you've got sextuplets in your bridal party, they are not going to be all alike. And why should they?
8. As for your own shoes and hair, go for comfy shoes and easy to manage and style hair. I worse peach satin slippers that were something like $12 from a Hanes outlet. No one is looking at your feet. Unless you need to have a particular heel height in order to get your gown to hang right, go with what you like. Any white, ivory or pastel shoe is fine. Just stay away from combat boots.
For hair, I had a French braid and a pretty barrette to keep it in place. That's all. It was no worry and my regular hair dresser took care of it the night before. Try a few hair styles now and see what you like. You might find you can even do it yourself or have an attendant do the style if it's a simple one.
9. Cleanup is done by the church, but find out what their policy is. If they need to hire extra help, you will probably be charged for that.
10. Rings are inexpensive if not bejeweled. I assume you are asking about wedding as opposed to engagement rings. We got ours for about $150 total. It was a regular jewelry store. Just shop around. These days, you might even want to check out eBay although be aware that you will need to deal with a VERY reputable, well-rated dealer to be sure you aren't being ripped off.
11. Tuxes or suits -- to rent a tux for the evening is far less expensive than buying a new suit. But if a new suit is needed anyway, you might as well go with that. If you're going the rental route, shop around. We got ours pretty inexpensively and the groom's tux was free. The guys could even rent shoes and the like.
12. Paperwork -- open the phone book for the county where you are getting married (if you don't own the right phone book, go to the Library and do this there) and look up marriage licenses. When you call City Hall to find out the particulars, find out if you need a blood test or anything else.
13. Makeup -- I did my own, so did my attendants. Keep in mind it's Miami and take the time of year into consideration. Will it be really hot? Humid? Of course you want makeup that won't sweat off.
14. Get together a small basket of samples -- dental floss, Tampax, emery boards, cotton swabs, little mouthwashes, stain blotting wipes, perfume samples and the like and keep it for the day of the wedding. Put it in the ladies room. If there's more than one ladies' room, make enough accordingly. This is a nice touch, and the items will be used. We really appreciated the dental floss in particular. No one is going to brush their teeth during the reception, but no one wants spinach in their teeth while pictures are being taken.
15. Keep track of any specific traditions that should be covered, and how. My mother-in-law is deaf so she did not want to have a mother-son dance if it was just going to be her and my husband, so instead we did that in combination with the father-daughter dance. We have a tradition of raising the bride and groom (and sometimes also their parents) on chairs while dancing. Our folks didn't want that, so we settled that before the wedding and no one worried about it.
Hmm, I think that's all of it. Congratulations to you and remember that something will go wrong (for me, it was that the DJ forgot "our" song. It was okay, I improvised on the spot). Accept that, wait for it, and then tell yourself that you've had the thing go wrong and now the rest of the day will be perfect. Because it will.