Well the first question is what is your reason for the flip? Do you need more ground clearance or are you trying to level the trailer for towing?
When you raise any vehicle you also raise the center of gravity and that may affect the way it handles.
If you are trying to level for towing why not get a drop head for the hitch. It would be cheaper than the flip.
Also if you add your camper year - make- and model it helps others to help you.