Sounds like you've got a solid plan for the season. Remember, though, we're talking about two different things - getting your boat a handicap number to race in the open fleet, or meeting up at a Formula 14 regatta and racing straight up. I went back and re-read this thread, and it seemed like the majority of people that spoke up were not in favor of a single Formula 14 number - just the principle of first-to-finish within the 14s and racing with pre-existing numbers in open fleets. I was expecting that someone would eventually show up with something that was built to fit the box, but doesn't have established numbers. If you're going main and jib, and I were in charge of scoring a regatta you were in, I'd probably look at something like the Nacra 4.5 sloop numbers (79.4 base number) to start.
Good luck - send more pics.