Since your wanting a stiff handle with a 30" draw I'd use all that length ya have...width will depend and vary on what kinda style and front profile you are wanting to build....if you can be more design specific,then widths can be given...for example pyramid,reflex deflex,recurve,standard flat bow,holmgaard,mollegabet,r/d recurve,sudbury,meare heath,etc..etc..etc.....
Oh...and flat bellies are best for locust