What's more important? Kids space or living area?

Sounds like you have a plan. I agree with kid space, we have a bunkhouse that sleeps 4 but also have a full size outside kitchen which is the key to our trailer. The outside kitchen is our must have. Our bunk house can also be emptied and used as a nursery when our grandson comes with us. As for the island, we do not like slides that open under the awning and takeaway valuable outside space.

Good luck and enjoy the extra space.