Seems to me that you lose access to the front left hand corner under the worktop. Wonder if a small locker door on the outside would be a good idea.

I'd add a microwave, but never an oven. We were away for ten days recently and my sister in law was camping next to us in a WWB (standard UK 4 berth van) with oven, hob and microwave. She used both the microwave and the hob, but never the oven. I said she could cook us a nice roast chicken, but she declined...