Update: found a good use for some mic stand bags I had, protecting the lenses of the lights during transport while not adding much weight or bulk. Fit like a glove.
Also picked up some hardware for my e-track that allows me to suspend these t-bars off the ground in my van. rated at 200lbs max load but overall I'm hanging <50lbs. The distance off the e-track makes me a bit nervous for bit bumps on the road so I'll probably add some more screws to the e-track to make sure it doesn't peel off the van from the leverage of these but so far I'm quite happy with the results.