2013 CC Precedent Upgrade recommendations

[mannvel]

So I purchased a 2013 Precedent with a 6Inch lift kit and 23 inch tires.

The car goes about 15-17mph (Phone GPS) but slows down to 10-11 in hills.
as I read here looks like in order to get speed (25mph ideally) and the torque to get up the hills quickly I need to upgrade the motor, controller, solinoid and wiring set.

I Upgraded to the MadJax 600amp with on the fly programmer and notice some pep but nothing to write home about, or justify the expense.

Everything else is stock.

I am spending some money on a H/D solinoid and some 2gage wiring kits.

Should I have invested in a motor first..? or is there no other way to do what I am trying to do now..?