Evolution of the Brushless Maxx

[Megazone23]

Okay, so since I can't afford to just plop down the cash and build a brushless rig all at once like I'd like to, I'm trying to figure out how to upgrade my Maxx in the order that makes most sense.

Should I start with getting the GorillaMaxx chassis first, then upgrade the drivetrain parts, and then get the brushless motor and ESC?

-OR-

Should I upgrade the drivetrain parts, then get the brushless motor and ESC, and then get the GorillaMaxx chassis last?

-OR-

Should I just get some 7-cell batts and run the s**t out of the Maxx in stock form until something critical busts that would force me to upgrade something that would need to be upgraded anyway for brushless?