The problem you're gonna have is finding a fifth wheel with the same quality and dependability as your Lance camper you have now.
As others have already stated, I also urge keeping the Lance.
There was a poster here on the forum, way back now, believe he used the user name "Wheeler". Anyway, he modified I believe an Alpenlite fifth wheel and some of his photos/posts showed what one can accomplish, off road and off grid, with a fifth wheel.
So it is really just limited to your own imagination, but I fully believe a fifth wheel is capable of handling more than just paved roads. Mind you, the caveat here is of course speed off pavement will be greatly reduced.
Best of luck in your searches.
