Caysea7254.... knowing how you like to camp from your other posts I don't foresee a problem. You're not one to go to the most popular, expensive parks... or have you changed? :) There are always parks to stay if you're not particular. Moving around is a good idea as a new full-timer! Best of luck to you in your new lifestyle!!
We've found it's best to pull in on Sunday afternoon or Monday morning to secure a site without reservations. That's how we traveled for 16 years of full-timing. This even worked for Yellowstone.