Moved to project forum - AC sizing?

[Persistence]

Hi all, I have a '94 31' open and I'm looking to install ac/heat. I got some info on 12,000btu webasto. Will that be adequte? And what kind of job am I looking at? I'd probably look to have someone install it for me.

Right now the boat has not ac and no gen. I dont think I need a gen now, but will need a 2nd power hookup. I'm in Boston, so will probably only need to run it dockside.

thanks!