You don't need to build a recumbent by yourself anymore to get the best one for you.
Today there are plenty of recumbent dealers with several recumbent bikes and equipment available.
Here you can tryout any bike you want and make your best choices. Now you should take a test ride on any bike you can get. You can't make a decision from just having a ride around the house. Everybody wants to have it, nearly nobody actually owns it, a full-faired recumbent. Most of the recumbent-shops don't sell fairings.