What about backing the trailer up so the steps on that side are on the other side of the power post? That would bring the front up quite a bit and probably let you level ok. Unless there is another rig directly behind you, and it doesn't look like there is one that close, that is what I would do. Doubt the campground management will complain, even if your rear is "outside" the normal site boundaries, if you explain the reason. From the position of the rear cement curb it looks like you have a lot of room to move back.
Barney
