the only problem i had when i had reverse in my 3.3 was I put my diff.s in backwards and it was ripping reverse apart because of it, and I had some cheap driveshafts in it as well.. When done right I never have extra problems because of the reverse,,,, just make sure your idle is not to high.... and it should shift fine...... depends on your driving style if reverse works for you... I drive alot different when I am using one of mine that has reverse then when I am running one without reverse.. oh and yes your revo controller will work..... and traxxas controler/receiver set will work.... if you want to use reverse then 3 channel but if you dont want reverse a 2 channel wil work