The biggest problem with your plan is that employers know that once an internal RN position opens up, you will be out of there. They don't want to waste the time and money training you--yes, it does cost to train even a clerk--when they know you won't be staying...so most of them will pass over your application.
That being said, you don't know unless you try, and you have nothing to lose!
But like Aniva said, read any contracts and fully know what you're getting into before you say Yes.
Since you actually have a good experience base under your belt...have you considered agency or travel nursing? They may be more willing to take you on, and at least you'll be working as a RN while you're looking for a permanent position somewhere.