Hello, i'd be real interested in your monster Dolores/Colorado trip. Just got back from a Dolores trip and had such a blast that i'm ready to go again for a longer jaunt, but i'm having trouble finding people that can get that kind of time to play.
We ran from Dove Creek to Bedrock 5/9 - 5/14. Snag was at 2000 and seemed a lot easier than at lower (~800) flows. The hole below the main drop was a bit more munchy, but the sleepers below were much easier to navigate a raft through with more water. We ran a 16' oar rig through no problem, tho we did portage a bunch of gear and the cooler just in case something went haywire.
The last time i did Chicken Raper was 2002 @ ~1000 cfs, and the top half was a bitch to get a raft through. i would guess that the bottom half of the rapid would be real munchy but straightfoward at >3000, and that the top half would be easier to navigate, but harder to catch the right hand channel halfway. My real concern on the Gateway stretch would be the 'house-sized boulders' at Beaver Creek rapid mentioned in the guide. Best to scout river left just after the wave train about 400 yards above the boulders, even though there is no real eddy to catch. With the speed of the water, a wrap here would be real easy and real bad.
The big flows on a little river made it important to read way downstream. For example there was a nearly riverwide strainer below the Slickrock ramp (i think at mile 50.25 in the DeVries guide) on a fairly blind left-hand bend where i had my stern in the tammies just to get through. Having a kayak out in front to gesture frantically to the left was very helpful in making this move, and many others.
I'd guess we were traveling around 6 mph on the water in the gear raft without pushing, so 20+ mile days are pretty achievable right now. Below Bedrock the water slows considerably until Gateway. There is a lot of private land and few legal camps, but hardly anyone does this section, so you'll likely have your pick of sites. The Slickrock to Bedrock section was very busy. When we found our intended camp occupied one day, we went for the next one only to find the next eight usable beaches (nine river miles) were already use.
Hope some of this was helpful, and i hope you have an incredible trip. If you want some company and can go soon (as in by next week) let me know here in this forum and i'll be in. Get it while it's goin', cuz who knows when the Lady of Sorrows will run again!