Howdy Makenze,
I have recently completed two Red Oak kid's bows, they are about 20# @ 20" (both are 48" long). They have little set and shoot just fine. Also, I've made a few Red Oak hunting weight bows (45 to 50# @ 28"+), they also have little set and shoot well. Some of these bows are backed with silk, the others have no backing.
I get my red Oak from the BigBox Stores, but I'm very selective in choosing my boards. I only buy boards with very straight grain running the whole lengthof the board on the sides and edges.
Also, I follow tillering / bow making guides that are posted in the How-To section or on some of these guys own web sites.
Red Oak in a fine wood for making bows, but, just like when using Maple, Hickory, etc. you have to start with a good board / stave. And, you have to follow some guide on making bows.
I hope this is helpful,
Canoe