Lots of good info here: BLM Gunnison Gorge National Conservation Area
Eddyflower has shuttle directions. Shuttle services through pleasure park (takeout) are available...someone should chime in for the specific info,or google pleasure park and call.
Are you taking all kayaks (hard or IK)? Chukar trail down to put-in not great for rafts...most hire burros $$.
Solid class IV (or III) paddlers don't need to be shown the lines.
Lots and lots of camping in the gorge, i highly recommend staying a night on the river- maybe some have their favorites.
Bring a fishing pole (lots of flat water) and eat large!