Piper
I am going to make a suggestion here. Since money is tight go to a self bow (all wood bow) they are not that hard to build and you can build one for just a few bucks less than twenty dollars and have a good shootable bow. Doing this you will learn how to make a bow and tiller and build a riser that fitts string grooves limb twist and what to do about it.
Build a bow longer than what you think you need, can always shorten it later, a bow that is low lbs, shortening it will jump this up, and back it. My first wood bow was backed with a piece of nylon from a tent rain fly.
My favorite wood is one you don't hear much about, mulberry,it has wide rings so they are easy to follow pretty straight grain, first cousin to your Osage orange and shoots hard and last but not least is easy to find, the next is elm , shoots pretty good is a bear to work but lets you get bye with a lot.
I have built longbows self bows recurves all out of wood and they shoot well, and you will learn so much that a glass wood bow later on will be a piece of cake.
Oh the stave does not have to be perfect, you will build to the wood .
My two cents
Ron