Cross country trip tips

Hey guys my girlfriend, our dog and I are about to embark on a 3 week cross country trip from Long Island NY to Austin Texas and back. Leaving 3 days before Christmas and will be taking the most southern route possible to try and stay somewhat warm. 2016 double cab shortbed TRD OR with the following supplies so far for the trip:
CBI 3rd gen overland bars
Tepui ayer rooftop tent
YETI 45 cooler
24 gallon action packer
Contingo storage box
Custom dog bench for the pooch
wide range of camping supplies campstove,overhead awning,foldable chairs,eno hammock etc

Looking for any insight, hints, tips and tricks ranging anywhere from what other supplies we should bring, any places to stop (that are dog friendly) camping sites! whatever you guys got would be much appreciated

 

One Tip: Have Fun!!!!!!!!!!

 

Just got done with a 3300 mile trip last week.

Midwest was frigid, get a heater for the tent.