Office vs hospital??

Hi all! I was hoping that those of you with experience in bboth medical offices and hospitals could help me out here. I may have an opportunity to switch to a medical office that is affiliated with the hospital where I work. I'm currently in med/surg hem/onc, but I don't want to stay there forever. I had sort of resisted leaving my job becasue I am pretty comfortable there, and the pay is pretty reasonable. So here is my list of pros and cons, but I'm sure I'm missing some big stuff. Can you guys think of anything to add to this list? If you worked in a hospital and went to an office or vice versa, what did you think? Any advice for me? Anyway, here goes:

Pros of leaving
1) I'm on 2nd shift now, every other weekend. If I go, I would be like 8 - 4 Monday - Friday.
2) It would be a different kind of experience - I want to broaden my experience as much as possible.
3) I've been on my unit now for about 6 years, and I feel like I'm in a rut. Some days I love my job, but usually I feel pretty burnt out about it.
4) It would basically be a transfer (the nurses at the practice are actually hospital employees) rather than a complete move to a whole new place.
5) I don't want to stay in the hospital forever, and the longer I stay, the harder it will be to leave (you know what I mean $$$)

Cons of leaving
1) I like (most of) my coworkers a lot
2) I'm confortable where I work now
3) I would have to work 5 days a week where I only work 4 days a week now.
4) I am just starting to some training for some "higher up" stuff (charge, etc) - if I leave now, I will miss out on that stuff (but then, do I really want to do that in the first place??)
5) I will make less per hour if I go (I'm not sure what the difference will be - we haven't talked salary yet, but I know at least my diff is $5 an hour that I would lose - then again, 8 more hours per week of work would make up for that)

I've got more, but I don't want this post to be too long. I'm really just starting to think about this - what do any of you with experience have to say about all this?

Thanks!!!!!