"Nekkidfish"......You are a good negotiator.....you did your research, you got a good understanding of how the RV sales system works and you bought something you could afford. You can never look back and question what you paid, one it's too late and two, it will make you crazy.
Hopefully, you and the dealer struck up a good relationship by making a reasonable deal and there will benefits in the end with the dealer respecting and taking good care of you. Enjoy your new coach.
Now.....get a pad of paper out and start making a list of all the neat things you need to outfit it, like plates, silverware, rugs, trash cans, matching towels and linens. Take measurements of the storage bays and cabinets so you know what size Tupperware containers will fit for organizing games, food and equipment.