Congratulations on your increase in strength. That's a good thing.
The big jump in draw length makes me wonder if you are drawing the bow correctly. Are you familiar with the difference between drawing the bow with your arms/shoulders and drawing with your back? Are you familiar with the J shaped drawing curve vs. straight line? If so, no need to go further on this; if not, we should probably discuss.
Are you conscious of whether you are releasing the string by relaxing your hand, or whether you are opening your fingers? Opening your fingers doesn't get them out of the way in time, and may result in the sore fingers you discuss. Once they are sore, they will stay sore until they recover, so it would probably be a good idea to get a heavier glove, such as the American Leathers Bigshot, at least until your fingers recover.
At 29.25", you're probably drawing 63-64#, so to get at least a 10 gpp arrow, you would need an arrow weighing 640 grains or more. If you had a 350 grain carbon shaft, you would need a tip or broadhead weighing about 300 grains. The shaft needed to make that work would be way out of my realm, but I'm sure some of the EFOC folks could field your question, if you pose it on PowWow where they tend to hang out. Personally, I would be more inclined to use a 225 grain point yielding about 9 gpp, and then I think 340 spine on a 30.25" arrow would probably work.
But first, determine if you have a J shaped draw. If not, you might want to work on getting one, which would probably shorten your draw length some.