My compound/Backtenison release draw length is 28.5. So My recurve is what? 27.5?

At 27'' Myrecurve is at about 42lbs
At 28" My recurve is at about 45lbs

Will a 400 grain arrow get the job done without any problems. I wanted to shoot my Beman 400's with 125 Muzzy four blade heads. It really shoots these arrows nice. I tried some 2314 aluminums and they don't fly for crap! I'm trying to get buy without buying new arrows for this set up!