Well, don't worry about trying the camphor! It doesn't make a bow. Makes awesome smelling furniture though. I think the oak will have issues with set at well if it doesn't season thoroughly in the wet climate. I imported some white oak to Taiwan where I live and noticed it took considerable set even though the wood was well seasoned. Could be design failure, but it really seems like moisture to me. Hackberry might be a better choice, or at least heat treat the belly of the oak. You've probably got crape myrtle, guava, mulberry, podacarpus, orange jessamine, cassaurina and plenty of fruit trees lurking all over the place around there. Just learn to ID them. New bowers get stuck on the traditional bow woods without realising that there has been a lot of experimentation with other promising wood. They will never be osage, but you will be plenty satisfied with them. Fun to learn about as well.