my 4.0 has the xcharger and I'm ordering the inner cooler within the next few weeks.

I live in the foothills of the smoky mountains and I would really like to upgrade the cooling system of my currently stock cooling system. Heat is really an issue in my car.

Has anyone put a larger radiator in their automatic? if so, part number?
a better fan?
lower tstat temperature?
Also, can I use my SCT tuner to lower the cut on temperature of my fan? how?

so many questions...