OK I hope I have what your asking correct.
It think you are asking whther you can now take pop top off road if hooked up to the 4by ?
If so - it will be all about your supsension and what sort of tracks you are going to do.
If it is standard caravan suspension then only stick to made roads or gravel.
If the roads are rutted with wash outs then exoect some damage to standard suspension like a leaf system. If you have that take it to a suspension and or caravan expert tell them what you plan to use it for and see if your supsension will stand up to it.
Better to get advice from an expert now than get it from the chesse and kisses while broken down on the side of the track in my opinion.
good luck and hope you enjoy the new places you may be able to get the pop top to with the right suspension