sound like a good set up u want to do. for cooling a cool tube would cool better, due to the heat going straight through the good. where as a reflector heat sits in the square hood on the sides,but still very usable. and ive have to say a good reflector is better for coverage.
I would go with a nicer ac hood. The cool tubes may cool slightly better but the footprint is horrible, its got bad hot spots.
The nicer hoods for a 4x4 are either a raptor or magnum xxxl but if they are too pricey for you a yield master should also work but not as nice as the others,
Adjust a wings are pretty bad ass, i use the smaller, 600 watt size. they give you excellent coverage and also disperse the heat well. I agree with Whodatnation, I would definitely not go with cool tubes.