Lower the truck....I did mine, very easy and cheap to do and the ride DIDN'T change. Lifting trailer.....easier on some, but wind could have negative effects, need to carry thicker blocks for under stabilizers, steps become uncomfortable to use, looks like crap,have to re-do hitch set-up.......besides, all that gap between the trucks tires and wheel well openings isn't necessary.... unless you rock climb with the truck.
Bob/Linda, 99 Dodge 2500 Cummins,2010 8280 Rockwood Ultra-lite 5er, PullRite Superglide-----
I'm retired......but work part time as a pain in the ass!........... USMC.