You've already answered my first question when somebody asks about what kind of floorpan to get, and that is, how do you plan to use the trailer. With that out of the way -
envision being inside the trailer for a stretch of bad weather lasting a couple of days. Where is everybody going to wind up hanging out? Our two did not necessarily hole up in their bunks (although at any given time at least one of them did). Mom or Dad may be relaxing on the queen bed, somebody would be occupying the sofa and anybody left over may be seated at the dinette doing whatever. We typically pull the CG's picnic table in under our awning, so one or more of us would wind up out there, too.
I don't know that the island is all that important (although very nice to have) but what IS important is that you have enough counter space for food prep. I know this because I am often the chef, too!
When we bought our current TT one of the requirements was that it be able to keep us from having family melt-downs when we were on long trips (a month or more). That planning paid off and I suspect it will for you, too. Good luck!!
Doug, Linda, Audrey (USN) & Andrew
2008 Sequoia SR-5, 5.7 L, 2000 Coachmen Futura 2790TB Bunkhouse, Dexter E-Z Flex Suspension, Reese W.D. Hitch/Dual Cam Sway Control, Prodigy Brake Controller, McKesh Mirrors
:B