Different camper, but also have the Equaflex suspension. I went 5 blocks high with Lynx Levelers and my second tire was still firmly on the ground:
I ended up adding a board on top:
With the EZ Jack, you might be able to put it on a board if you had one long and wide enough. Or, OldCoot mentioned to me, in another thread, that I could have blocked between the suspension and the frame to keep the Equaflex from lifting so much.
No matter what you do- try it at home first!