I am not sure if anyone makes beefier stock arms, but they do sell aftermarket boxing and tubing kits. seems to work very well, I built my own tubing kit, and I should have bent them by now. Look in the long run tho, are any mods ging to take place later where you should purchase longer wider arms? (they require longer axles) but you get more lift and wheel travel.
Who needs foot brakes, when there is WOT and steer brakes.