RN-DNP Program - Course requirements

I've Been an LPN for 7 years. During this time I've received a BA and I'm currently 4 classes away from receiving my RN, ADN. My goal is to graduate next year and begin within a year a RN-MSN or RN-DNP program. Which is feasible because of my BA. However I have an abundance of questions, which I am looking for advice in. I've been doing a research for the past few months and looking at AllNurses for advice as well..

1. Has anyone been able to take general classes for an NP program without being accepted into the program itself? What are the requirements? Do I already need to have my RN to take the class?

2. Most of the RN-DNP programs I've researched are instate and at most are hybrid classes (half online/half in class). I'm looking for an RN-DNP or RN-MSN program that's completely online. *I do prefere RN-DNP over the MSN* Does anyone know of a good school and program?

3. The program needs to be affordable. Most of the programs I've seen range from $50k-$80k. That's just too expensive.

Thank you for your help!