Ah, well the definitions are probably the same here, but we will have a L be a mediator (when not specifically representing either party) and operate from a foundation of collaborative D, I suppose.
I guess the cost in your area is probably a little more than here, although at $100/hr to help the two of you come to an agreement for 66 hours (a couple weeks) is probably reasonable.
If you feel you can, then do that. If you feel you cannot, then I guess collaborative D would be the way to go.
Agree to do what works for you. I ended up bowing out of mediation because I was convinced that I would not be able to stand up for myself and my rights. In the end, my W's L came up with a reasonable SA offer, all things considered.