Advice for 2012 5.7

Turning 16 in dec. and receiving my dads 2012 1500 Big Horn. It has 160k miles (LARGE majority are highway miles) and is in great condition. Never taken off road and never driven recklessly, but was wondering if there’s anything mechanically or specific we should try to knock out before December. Would the transmission be a good place to start?

Specs 2012 Big Horn 1500 5.7 Hemi 2wd Crew Cab 5’7 box