Need a good left kit , tires and power

I live in nyc I have a 2011 jeep liberty and I'm looking for more power out of my 3.7 and better height for my jeep and good tires for those nasty potholes. I'm reading all these great thread u guys leaves but I can't find any that would help me on my quest to fully enjoy this jeep. I want to go off roading in my spare time. But want to do right the frist time... please help....