To the OP. Go for it! If your step is an issue, simply put a small portable plastic step or something in the TV.
My axles were already flipped and I too needed more clearance. I've got almost 8" now. I had ours lifted by our dealer. They fabbed a subframe out of 2" square tube steel with cross members for rigidity. Best $1k I ever spent. Woulda had a clearance problem leaving a campsite just a few months later.
In addition to clearance, my trailer was running nose high, so I wanted to level it. Will yours run nose low after the flip? If so, lift your truck! I can't lift my truck or I'm back where I started, but I'd like to.