Hello Trad. Gang

I would like to start building my own wooden arrows, and I'm looking for some advice on getting started. I do have a fletching jig and will be ordering a hand held taper tool with changable cutting dyes and dipping tubes for sealing them. I have alot of questions though on getting started. I have only shot cedar shafts. Are there other types of wood as good? Should I use tapered shafts? I understand about spine weight but how do you choose shaft diameter? For starters I'm going to build some for my longbow. I shoot 70# at 28" draw. I tried some test arrows at a local bowyers and the best arrow paper shot was a 60-65 spine. It was 31 1/4" long. and I'm guesing 5/16 diameter. Any and all advice would be appreciated.

Thanks

Jim