Rustprofcorn, i highly sugest you get a Mamba Max Pro and enjoy.
I use it in the snow here in Canada every day and i did not wateproof it. I just put the ESC in a ziplog bag (ziptied) and lowered all the setting to lowest power till spring (or it will overheat in the bag).
Much better ESCand it just works.
The motor seems ok so far but you could try castle 3800 or Tekin 4000 kv4 pole if you wanted the best.
Replace screws as you go , they strip easy..
The stock reciever will work just fine with any ESC. Tekin also makes a very nice ESC, better then the Castle stuff.
I also driled holes in the body for better ESCcooling.
My steering servo is Hitec 645 - works great . Also motor pinion treadlock is a must. Ialso greased the metal gears , that seemed to make the truck a lot less noisy.
Spray WD40 on it after snow and rain runs or the screws and bearings might rust.
I also cut the antena tubeall the way down so just a bit of antena wire pokes out of it and tape that to the antene tube.
The rear knuckles break easy on jumps . Drill them so you can place a zip tie arround it and it will holdtrough mild bashing till aluminum parts come in the mail
Hardcase 6000mh 2s lipos fit greatand have enough amps for the hungry motor.
Hope this helps .
Vanya