Need some career advice....

Hi All-
I am seeking some opinions from perhaps some more experienced nurses than myself. I read some other posts here and figured I would ask about my own situation...

I am a second career nurse (almost 41yrs old). I worked for a year in acute rehab. I just moved and have FINALLY made some headway as far as the job situation. It has not been easy at all.
I never thought I would be a rehab nurse while in nursing school but it is the first job that came up for me and I was grateful for the opportunity. I found it very challenging and a good mix of med surg along with rehab. It was a great experience. I can't say I loved it or hated it. With only a year, it is hard to say for sure how I feel.
Once again I applied for countless jobs, after moving, but the ONLY one that showed an interest in me is at a rehab hospital. I was offered a PRN floor job which is what i initially applied for but was also told about a PT job as a PPS/MDS coordinator. This would be to supplement a FT person, not a solo endeavor.
I was surprised b/c not only is my clinical experience minimal but I have no real PPS experience.
In your opinion, is this something I should consider or just dismiss until I have more experience under my belt? Perhaps revisit it down the line? It doesn't pay as much as floor nursing and isn't as flexible as a PRN schedule but it did sound like something I would be interested in. My fear is that I just don't have a enough experience to make it work now.
Any insight is appreciated and many thanks in advance!