Rubbing alcohol doesn't work as well on the grime, it is more of a sensitive area cleaner (rx, ESC, servos, where you are going to put stickers), but simple green works great. Get a bottle of concentrate and an empty spray bottle and mix it about 3.5:1 - 5:1H2O: simple green, works well and dries well.
THe ultra plug, that's it, I just use a switch, although I am thinking about hardwiring the battery to the rx pack, less connections=less resistance=longer battery life, or something like that.
L8r S.
Rod