The wall probably is not strong enough to hold a TV bracket. The top of the cabinet is your next best option. Ours is on top our fridge. Without removing the fridge there was no way we could mount the bracket. The shelf has the same tip of overhang yours does so I used my portable bracket that I used in my previous trailer (that had a folding TV shelf). I just leave it permanently mounted now. The bracket, not the TV. It easily detaches with a thumbscrew. I got the bracket from Mono Price
. Good prices, excellent quality, and mounting systems for any kind of situation you can come up with. You will be able to find a nice bracket that you can bolt on to the shelf.