2nd set of wheels for off-road
I need a 2nd wheelset. The roughest thing I see is light singletrack, small roots or occasional rock/branch. I'd probably dismount and carry the bike over anything larger than a curb. I think I do a decent job absorbing the bumps I can see, but sometimes one will catch me by surprise. The hardest impacts feel comparable to riding off a 6" curb, which I'd like to be able to do occasionally (and bunny hop small obstacles).
I weigh 135 lbs, the bike is a fuji cross pro with the stock alex ace-19 wheels/formula hubs/14gauge straight spokes (these will be put to road/rollers use). I'll stick to either 32mm tires or maybe 35mm.
I'm tempted to just get an open pro/ultegra setup (looking at bicycle wheel warehouse), but I'm wondering if I can go with something lighter to help when I carry the bike. I can save weight in hubs, spokes (fewer/fancier/radial?), or both, but I don't know how much I'll save or what I can get away with before durability becomes an issue. I'm open to any suggested combinations though.