Keep the questions coming - at least they are new and interesting and not the usual "where can I buy wheels" or "who has lockers?"
When it comes to cooling you want to set yourself up for success. Never too much radiator IMO. I didn't want to swap out the radiator support either (lazy, not cheap ) so I unbolted & turned around the pass side support and used that as a guide to trim out the sheet metal. Gets you about 4" wider in 1/2 hr. Still a lot of room in front of it for an intercooler too - routing the hoses might be a pain, but not too bad. Add a Rhino grill no one would know it's there.
I'd go with a trans cooler in the radiator for the winter when you want to warm up the fluid quicker - I would add an aux cooler though because heat is the main killer for an auto trans.