I don't think all of the hate towards this thread is justified, but I disagree with you on tonight's game. They just looked off all night, and it probably had to do with us being extremely aggressive early on. Either way, a win is a win.
As for the actual thread, I'm not sure we can move down past 8, but I do think Detroit and Charlotte would entertain offers.
For Detroit, the other night showed that they need a stretch 4 next to AD, and KO would be a good fit there. However, they need a good wing as much as a power forward, so I would have to think they'd need to see someone like Oubre as the guy for them and a possible fall to 15. If they thought they could get him with our pick at 15, then I could see them doing some variation of your deal.
As for Charlotte, I'm still intrigued with Stephenson's potential. I'd do a Stephenson/#9 swap for Bradley/#15, because I still think Stephenson could be salvaged in our system. Furthermore, he only has next year guaranteed on his contract, so at worst we'd be trading Bradley for the #9 pick and two years less of his contract. We could then legitimately move IT to the starting lineup and run IT, Smart, Stephenson, KO/Sully, and (hopefully) WCS/Free Agent with a good balance between offense, defense, skill, and athleticism.