Congratulations on your new Shamrock. You'll find plenty of information to help you here. If you don't mind a few pointers, I think these are important for new RVers...
1. Study the weight distribution hitch manual and learn how to adjust it for the trailer once its loaded with your stuff. It will tow better.
2. Find an empty parking lot and practice cornering and backing up using just your mirrors.
3. Don't worry about buying everything now.
4. Make sure to driveway camp a couple nights and use all of the systems and appliances.
Good luck and have fun!
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD