I've been using R&R R10/R8 carts since they came out for years....."don't leave home without one".....sometimes I see other acts "carrying gear" under their arms, no cases, no R&R and just shake my head and laugh..I would also suggest you move in the rear speaker and stand up the X stand and bungee it to the handle makes for less chance to have a slide off accident.
Keep a Bungee on-board just in case comes in very handy.

good luck with R&R a wise choice!!