First, a technical point: RNs are officers. Officers do not enlist, we are commissioned. (Might seem nit-picky, but there is a huge distinction) Now, to receive a commission in the Active Army, you must have a BSN. The reserves allow you to be...
It is better to start off at a larger facility. The hours are longer, but the variety of services is greater and your chances for personal growth is almost guaranteed. Based on my expirence, and your desire to be near civilization, I would go with ...