When we were looking for a FW an island wasn't on the to have list, recliner's and washer/dryer were. We looked at FW that had a L shaped island which didn't allow us to get out of the kitchen area more then one way. We found a 3070RL online that had a narrow fixed island and we both liked it and knew when we bought it that with the slide closed we wouldn't be able to get into the refer. I wasn't comfortable with a island on casters. Over the years we have had too much stuff move around the trailer as we traveled across the rough roads we have in the US. I think you did a great job on the island you have, lots of storage, maybe just the weight of what you have in it will keep it in place. Whatever casters you get make sure they lock up good. PS We love the island, we can both cook at the same time without getting in each others way. I just wish we had a couch in the rear and the recliners on the slide, that way I would have to fight with them into position so I can close the slides.