On second thought, ditto Chuck's idea on Siberian compression pine. Somewhere out on the Google, there is a photo essay on Finns building a compression pine belly, birch backed bow. Black and white photo essay. Watching these men make a composite bow with hand tools mocks our modern problems.
Ordered some hide glue and sinew, finally. I guess we eventually all try sinew, lol.
What I am saying, make a lighter weight bow. You roughed it out. Tiller it, pine is easy to rasp out. Learn.