What supplements should i take?

Unless you get lots of sunshine, you might add vitamin D, but don't overdue it. Alpha lipoic acid is not bad as antioxydents go. They're both cheap. Omega 3 oils from cold water fish wouldn't hurt, but you say you have a good diet, so I would say to pass on the calories and expense.

Oops! You want to gain weight and money is no object. Definately add the fish oil.

Unless you are trying to treat a specific condition, or have lots of money, that's probably as far as you should go.

Six Quarter pounders while playing ten continuous hours of Warzone Combat on the playstation.
Do this six days a week for a year, then hire a crane.

I suggest you not to have supplement ,eat natural foods and get your body fit as its possible having healthy food.
Eating supplements also causes side effects so better think before you have any.