You should definitely consider the bumpstops and frame support if you plan to do any serious offroading. I make good use of the bumpstops still with RPG HD springs (which are similar to the Deaver 3+ springs). Rick at FreedomMotorsports (@RDFTS or @
Rick@FreedomMotorsports) can hook you up, he is great to work with.
I am using the RPG bumpstops and was pretty pleased with the fit and finish of that kit. I wrote a
DIY for the RPG Stage 3 kit which includes the springs, frame support and bump stops. I am not sure if that is what you are looking for but it should get you pointed in the right direction.
I have no experience towing, but I am told that
air bump extension pads are useful while towing.
Hope this helps! Good luck!