Nick: Ansel Adams used an 11x14 camera to enlarge his 8x10 negs. He explains the procedure pretty well in his book "The Print". He had his light system made, but you might can get one from Aristo or they may make you one. Can't tell you how difficult portraits might be with 11x14. The largest I have used is 8x10, and you need lots of light for that size because of depth of field. Go for it and let us know how it turns out.

Regards,