June 30 is late for runoff unless we have an unusually wet and cool Spring, so most of your water will come out of Flaming Gorge (+ whatever is left coming down the Yampa and White). You can check Flaming Gorge releases on several different websites, links also in other threads here on Mountainbuzz.
I'd guess you can count on 6k, maybe up to 8 or 10 if still in runoff melt mode. All are great levels, almost all rocks covered up and good current.
No outfitters in Ouray (also no alcohol - Ute reservation) and the only outfitter left in Grim Reaper is Holiday. They flirt with renting gear to private boaters but are really set up as commercial, offering trips on Gray-Des, Cat, Westwater, etc. Closest place to rent boats and outfit is Moab, try Canyon Voyages.
Happy to help w/yr logistics (you're in NEW JERSEY?) if you PM me. Congrats on the permit, I got skunked (again) but have had no problems past few years picking up August cancellations. 'Skeets will be out at least to Jack's as Gary says above, but you can take steps to mitigate. Take care!