Heavy maxx what motor?

[RC Fan 4 Life]

So far i have....

HV on 14 cells
UE EXT suspension
UE 6 spyder diffs
GA bulk heads with braces
GA 2mm Titanium skid plates
MIP CVD's all 4 plus center
G1 Single speed trans with steel idel gear and flm half case
HiTec hs-45mg servo

only thing left to get is the Chassis and shock towers and shocks. To me it feels heavier now than it did stock. Will i be able to get this thing above 50mph on 20 cells and a 8xl and still have loads of power for wheelies? I didn't think it would be this heavy, i don't know what it weighs.