Get the raised floor on the dinette if you want to be able to actually look outside when you sit there. We did not add this to our build sheet until the last minute and, after using the trailer this year, are very happy that we added the raised floor. In my opinion the EMS is a must to protect your electrical system and components. Most other options come down to personal preference and intended camping style. The exchange rate is so favorable to US buyers that we added many of the options - no regrets on any of them so far.
Another option would be to just have the benches raised 3", still keeping a level floor.