To the above add Labyrinth on the Green- very pretty, very flat water -and- Yampa River fromCraig to Juniper Springs- also kind of pretty. A lot of people do the Yampa in Canoes- might be easier for you logistically.
If pumphouse run should see a big increase in flow, over 4k cfs, stay away from it. A guy drowned last yeat at Eye of the Needle, several have drowned over the years there. Yarmony is a flipper at higher flows. At 2500 cfs and below, it's a piece of cake