32 Oz. is a lot of nose weight. If you really want and need that much fuel onboard, it's best to fit a pump/regulator so you can place the tank over CG.

1. You'd have more room there.
2. Draining the tank won't cause CG and trim changes.

IHMO, you're better off putting at most a 24 Oz. tank and limit your flight time. Don't know about you guys, but my neck hurts after 10-12mins.