Suggestions on getting started?

Hi all...
Have a 2023 Tacoma SR5 that I have done some light towing with(~1-1500lbs) but am looking into purchasing a pop up and will be increasing my towing load so want to make sure I am doing things right. I am looking at purchasing a redarc liberty brake controller but have a couple of other questions...

-How do I know if I am set-up with a tow package? I have a V6, hitch, connector but the information when plugged into toyotas website doesn't explictly state the tow package.

-If I am to start towing a little heavier(max~3-3500lbs), is there anything else I should look into doing/having the dealership do? I have read mixed statements about the taco's having a transmission cooler but didn't know if anyone suggests a temp scanner? or anything else I should be looking into...Just trying to be proactive to do the best thing!

Thanks in advance