Hi me429sb, yes we had no issue installing the floors first. Basically it went:
1. Kitchen cabinets
2. Flooring up to and around cabinets.
3. Stone measure with floors in.
4. Stone and waterfall installed on top of floating floor.
5. Kickboards installed.
You will notice that the sides of the waterfall are mitred but we went with a shadowline where it meets the top bench.
http://i786.photobucket.com/albums/yy141/sco77k/Waterfall_zpsfr92l9er.jpg