I just want a good, reliable brushless system

I have an E-Maxx that I have done several things to and it is ready for Brushless. It has some aluminum parts, some RPM parts, some titanium parts and some modified parts; all aimed at strength. It weighs about 12 pounds and I am looking for a good, reliable brushless system that is good for bashing and a little racing. I want to be able to use my dual IB4200 7 cell packs and keep everything nice and cool in the Hot Houston Texas sun. I want to be able to set the gearing up and stay in the 40 mph range. Cost is really no object but there is no need to be excessive. Can anyone help me with a good set-up? Motor and controller?