If you have the tow package and 3.92 gears you don't have to worry too much about towing. I have a 2018 and in the 38k miles with 10k of towing I have not had any problems yet. I did add an Airlift airbag kit to keep the truck level. I have never seen any higher than 195 degrees on the trans temp pulling the Blues Mnt Rng, on flats I keep the cruise set at 72 MPH and avg 13-14 MPG per the lie-o-meter. That Cuda of yours will not give the truck any problems. I have towed many cars, trucks, and a horse trailer with mine. As far as adding keyless entry, I would stick with the Mopar kit, they are plug and play with a dealer flash.