Looking for e-maxx build input...

I bought a used emaxx off ebay many moons ago that I enjoyed until I smoked the ESC after bashing in the snow (couldn't resist). Instead of replacing it, I am looking to go brushless and would like to be able to run LiPo and NiMH (no, not at the same time ;). In making this move, I understand that I need to beef up certain components to handle the power. This is what I have to work with:

• UE Super Servo Saver
• HiTec HS-645MG steering servo
• alu front and rear bulkheads
• alu front and rear skid plates
• alu front and rear mounts
• alu servo guard
• alu chassis braces
• upgraded shocks/springs (not sure what flavor)

I am leaning towards going to a single speed transmission and getting a new radio. What other driveline components do I need to upgrade? What are the other weak spots on the EMaxx? What are the most common motor/ESC combinations?

Can someone help me with identifying the parts so that I can put a sticker price on this?

TIA,

--
Marc