I tried 35/55's out of a very similar similar set-up and they pretty much sucked. Needed at least 200 grain points; they were terribly tip heavy and overall GPP was very high.
Go lighter spine for sure, at least .600 spine. You might want to get an idea of what weight broadhead you want to shoot, what you want for total arrow weight (GPP), and such, then look for the arrow that'll suit you best. I know Braveheart and Big Jim's stock lighter spine carbons, know their stuff, and take care of their customers.