I will echo that the pay cut is significant but the perks are worth it. To be on the same schedule as my kids, in the same building as my daughter, is priceless. I'm going to cry at the end of this year because my baby will be moving on to the next building. The adults (staff and parents) have been far more difficult than the kids for me. And the worry about certain kids when school isn't in session. Just about the time I feel like nothing else can surprise me, something else comes up. Hospital nursing can be physically exhausting, but this job is emotionally exhausting.
I did not stay PRN anywhere because we're fortunate that my husband's job pays the bills.
Start subbing for schools around you to get a feel for the job and get your foot in the door. I had subbed at the school my boys went to and the nurse there called me to let me know the job I currently have was opening up soon.
Maybe you'll get lucky and you'll be in a district that puts you on the teacher pay scale.