Search on youtube for Ft corsair. Then you will get video of flite test corsair build. Watch that video and in description you will get a link to download plans for free. Download that plans. In plans you will get all the specification like its wingspan length , which kv motor you should use, what battery you should you. And make it in depron foam.

not interested in corsair anymore as i have recieved suggestions of other planes which might be more apt for my needs

Ok