Yeah, I'd go with Surewood. You'll be heavier than 650 grains, though. Probably around 600 grains for the bare shaft. You'll probably need 85-90 or 90-95 spine, maybe even 95-100. The test kit would be a good idea.
For a reference, I shoot 65-70 spine full length out of a 51@31 Hill. With a 125 grain point, they weigh 650 grains.
They are tough, much tougher than cedar. I've broken a few, but that was when I hit rocks. It still is a good idea to not knowingly shoot a solid stump, though.