Look at my hitch set up please....

If the axles cannot be "flipped" to gain you five inches of ground clearance at the tongue you can still raise the trailer how high you want/need by putting "blocks" between the axles and frame. It is very easy to do. As I said earlier if you remount the coupler - actually you would put a new one on - you will gain two inches which is not much. A new coupler will cost about $20.00 or so

You have to decide how much you want to spend to have someone do this work if you can't do it yourself. If it was mine I could fix all of this for less than a hundred bucks, then I would spend two more for a powered jack. Three hundred all in no labour which could be another three to four hundred or so.