The mooooost important thing is congrats and enjoy your truck!
The ol’ leasing vs financing discussion is much more complicated than it appears on the surface. It’s another conversation and rabbit hole. It’s not cut and dry. It depends on many factors: how you use the vehicle, mileage, money factor, the anticipated residual, how likely you are to keep or trade the vehicle in 3 years (this is a HUGE factor), etc. etc. There are valid arguments to be made in both sides. That’s another thread.
Enjoy. The real question and dilemma is, how much to you mod a leased vehicle!!!!