Nice so your a nursing major? I have 2 part time jobs at my school between and after classes and stuff.
To make it a little easier for ya, the ATF thing was suggested because it's fairly common for t4r to have faulty radiators. The radiator's have an internal automatic transmission cooler in it, and after a while when the radiator starts corroding it leaks and mixes into the ATF fluid, causing it to look like a strawberry milkshake. If that fluid gets into ur transmission, ur looking at replacing that badboy. so therefore alot of people have got an external ATF cooler and bypass the internal one completely. Cheap investment to save lots of money down the line.
I wanna swap out the seats maybe get some leather in there. Maybe some sound upgrades. thinking about the supercharger but that's pricey. My priority right now is
1. ATF cooler
2. Lift (maybe spacers to start off with cuz they're cheap but looking to lift about 3 inches)
3. security system/remote start/keyless entry
4. sound system
5. tires/wheels
6. intake/exhaust/ecu upgrade
7. E-lock diffs