Great place to work

I work in a Medical Imaging Department, Days only job and it is wonderful. We work every 4th Saturday, and get the Monday off. There are only 3 nurses that work here, with casuals for vacation relief. My problem is one of our RN's is relocating out of town, and one is on maternity leave until October. The jobs have been posted, but no one is applying. This is going to leave us in a dilema. Our manager may try and replace the RN's with LPN's, until we get more RN's. I know this is a temporary measure, and the LPN's will be a great help, but it will put more responisiblity on the two RN's that will be left making the job more stressfull. We work closely with radiology technoligists and radiologists. It is a great place to work. The RN's prepare patients for CT scan, scrub in for angio and interventional procedures, conscious sedation, do pre & post care. What can I do to get more RN's? I am going to make a promotional DVD, to let other RN's what we do...I am the CRN, in charge of the hiring aspect of the job, as well as carry a full patient load.