Came into a great condition Beseler 67, sans lens board and lens. Since I'm starting from scratch, in a way, I'd like to do it right the first time. Needing a lens for this camera to print (mainly) 6x6 negatives and *possibly* 6x9 (but not necessary). Any advice for a sharp, contrasty lens for this, so I can get the most from my prints? Points gratefully accepted!