If you have AND and are looking for an BSN. I would go to reputable school with the lowest cost possible. Unless, the program is not a fit for your schedule.
University of Nebraska Medical Center has an RN to BSN. That is legit. It would be a good pick since it is from a medical university.
If you do research on what the job entails, Informatics-RNs are a liaison between the clinical(nurses on the front lines) and technical (programmers, developers, report writers) domains in healthcare. That typically manifests in the form of meetings (to identify issues, solutions, build needed, timelines, etc), build/test (where either the liaison or dedicated builders would build & test into the actual system), and a lot of emails that can range from general questions about the system, future enhancements, broken things in the system, etc.
If I was in your shoes, I would finish the BSN and then go for a Masters in Management Information Systems that has a focus on Data Analytics. The reason why is because Nursing Informatics can be limiting and since it is a new field, it is changing as it grows in demand. Having a well-rounded background in Tech makes a RN more prepared for the field than just a narrow focus in NI. Watch the videos below.
9:03 video mark - He defines Nursing Informatics as "the gathering of data and statistics." This is why I said, MIS with a focus on Data Analytics.
13:00 video mark- He speaks about skills that are different than Nursing practice skills. He mentions the system development cycle, project management, computer applications such as Excel and Powerpoint, which are usually taught in MIS, CIS, IS programs or provided for free as workshops in College. This is why I said, MIS with a focus on Data Analytics.
He says at the 15:23 video mark, that programming skills aren't needed but are HELPFUL. I disagree, as the NI field develops, programming skills are going to be needed more as time passes. Having these programming skills will allow you to liaise seamlessly between the clinical and technical domains. Especially, when working on a project with very tight time constraints. Also, data visualisation, data mining and other data analytical tools are becoming the norm and are slowly making Excel alone obsolete. These tools require programming skills in SQL, Python and R. Technology is shaping the nursing industry in ways we have yet to see and the best way to prepare for those advancements is by observing the changes in tech and merging them into the RN field. Those who adapt will be most valuable to the organization.
Just my two cents and a half. I hope this helps and provides clarity.