I have a client who wants an enlargement of a image I shot. It's a square crop and they want it around 30x30 to 36x36. I don't see a size close to that on Mpix which is what I normally use, but I also heard recommendations by folks here for White House Custom Color (WHCC.com). I noticed they have a 30x30 size, but then when I went to send it for prints, they have a questionaire about your studio and want you to prepare 5 8x10's files for test prints, etc. etc. Is there a quality lab I can just upload this to and be done with it?