Thank you for your suggestions. I have been looking into the boats you mentioned and some of the Iroquois models are actually in our price range. And you are right--the MkII does seem to be among the most affordable.
Thanks for pointing these options out. I didn't realize bluewater cats could be gotten for those prices. In terms of living area, relative to the length of the boat, this would be a much better solution than any of the monohulls I have seen so far.