Could Try Something Different
If you are planning on doing vinyl again, you may want to try to save the old pieces as patterns, whether or not you are going to do it yourself. One of the major magazines showed how to do it in an article a couple years back. Probably Cruising World or Sail. I've also seen tips and directions in books, possibly including This old boat. I'll check my stash and get back to you if you would like. Alternatively, you could do what I did. On my E-38, we purchased off white laminate, used contact cement to glue it to thin luan backer (8' sheets, approx). We made patterns for horizontal pieces that matched up with the plywood strips on the "ceiling," cut the laminate with a high end jigsaw (Bosch) screwed them in place and trimmed with battens. Looks great, is easy to get off when I need to repair something, and cleans easily. While we were at it, we also insulated the 1/2 inch space behind the laminate with 1/2 inch closed cell foam. Cut moisture down quite a bit. I can take some photos if you are interested. It is time consuming, taking about 20-30 hours. On the other hand, it was relatively inexpensive.