the stiff handle,, being stressed more may hold up,, but you might get more set than you like,, or going to 29 might compromise the performance of the bow,,,,, the set the bow takes may offset the longer power stroke,, yes it may shoot well,, but maybe it would shoot amazing at 26 or 27,,
the bend handle might hold the longer draw better, and end up having better cast at that draw,,,, I understand some have a set draw and its about getting the most draw from that piece of wood,,that being said ,, yes it could and has been done, but you are pushing it,,