First, I wanted to say you sound good. And I can understand that true connection.
Before we even get into over analyzing the rebound sitch....
The distance should be thought out first. At any point could you move? At any point could she move? Do you want a long term committed R? Is that what she wants? (and I don't necessarily mean together, just in general)
Because if the distance can't be worked out at some point, then finding out if it is just a rebound might not be worth the risk, because you seem to care for her an don't want ot lead her on.
But FWIW, it seems like you may be overanalyzing the rebound thing a little bit. Sounds like you actually care for her. The first real R after divorce doesn't always have to be a rebound.......
