I get:
1. Build: 75, Attack: -4, End: 71.
2. Build: 116, Attack: -10, End: 106.
3. Build: 151, Attack: -18, End: 133.
4. Build: 178, Attack: -28, End: 150.
5. Build: 195, Attack: -40, End: 155.
6. Build: 200, Attack: -54, End: 146.
7. Build: 191, Attack: -70, End: 121.
8. Build: 166, Attack: -88, End: 78.
9. Build: 123, Attack: -108, End: 15.
10. Build: 60, Attack: -130, End: -70.
So 10 it is. ARGH, if I had only double-checked my math