http://www.rc-monster.com/forum/show...?s=&threadid=8
Read the link above for some general information about set up and wiring. Not too difficult to do at all. For the heavy weight ruck you have, i would probably go with the 7xl motor. ON 14 cells, it will be quite a bit more powerful than the stockers, and can be geared to achieve 40+ speeds or more if you want. I generally gear for around 35mph myself (don't need to go faster), and get a nice runtime. The 9920 warrior controller is a popular choice!
Also, welcome to the forums! Glad you found your way here!