Welcome to the club!
If you are not new to camping, then don't need to tell you about all the great state and fed parks there is here in mid-east TN.
Since you are new to Rving in a 5th, you will find lots of advice on the net so the one thing I am going to tell you is to know the height of your rig.
'18 Arctic Fox 27-5L
'18 Ram 3500 SRL, Cummins Diesel