The brushed 4x4 is a great choice! Mine started brushed,and with a 2s lipo (gensace 50c 5000mah) it was a lot of fun! The first upgrades I would recommend are an RPM front bumper and Traxxas aluminum shock caps. My RPM bumper has taken many hard impacts and has saved the truck from damage. The stock plastic shock caps will eventually pop off the shock bodies when landing a jump and it's not cool. The aluminum ones are great and I have had no issues with them coming off.