First off, if you "flip" your axles, they aren't actually flipped. the axle is in the exact orientation that it is now, just moved under the springs. A set of New axle saddles must be welded onto the axle tube.
There are good videos and instructions on line explaining how its done.
My TT had "flipped" axles when I bought it. I compared it's height with a similar "normal" trailer and I gained about 4" or so. For me it's worth it.
Some people say doing so will change the way the camper handles. I can't say there's anything wrong with mine. You will have to change the hitch setup to accommodate the added height.
2000 Cherokee 29BH with 6V batteries, LED lights & 400 watts of solar power, flipped axles and raised. 2007 Tundra 5.7L DC-LB with lots of mods. C-co, 8/158th AVN Maint.