i have this;
B&M 70297 B&M Hi-Tek Cooling System
and i had these lines made to replace the hardlines and run stainless braided from the tranny all the way to the cooler. i completely bypassed the factory cooler, which is built into the bottom portion of the tiny frontier radiator.
when i first added a cooler, i tried to go the economy route and it really bit me in the a$$. i had to constantly babysit the hose clamps because they would come loose and leak. i snugged them up before a trip, and when i was in the desert womping around, the clamps quit and puked tranny fluid everywhere.
i decided that my tranny sees lots of stress, and quality is not something to skip on in high performance applications, especially when i'm going to be in the desert.
the total cost was around $430 for that cooler and those lines.
as far as lights, i'm quite pleased with my hella 4000's. they are a little bulky at 9" wide though. you can find them for about $80 a light without wiring.
another option would be a hella 500 kit, you get two 5" lights with a wiring kit for about $80. i was running them before my hella 4000's and they were quality lights.
hella 500's

hella 4000's