I`m also shooting a widow. 54lb @28.
63lb @my draw lenght of 31".
I´ve tried some different shafts and to me the 2 best are Beman MFX Classic 340 with 125gn point(arrow weight 520gn) or the carbon express heritage 350 with 60gn insert and 125gn point (arrow weight 570)
Both of them work very well, the more forgiving one is the heavier carbon express.

I shoot a MAII @ 54lbs is really likes easton axis 500's 3 5" feathers. 29" long.