Depends on the mocks. See some of the mocks on RealGM and look him up.
http://www.nbadraftroom.com/2017/01/isaac-bonga.html?m=1
The only concern is do we have to take him at 10.
Some folks on the realgm forum and that link you posted are the only two places I've seen Bonga being mocked to be taken in the first round. Every other major sports outlet out there that I've read has him in the 2nd round.
I'm not even a Kevin Knox fan but I think he would be a much safer bet. Bonga looks like he has some good tools but he has a ton of things he needs to put together to become a good player. Plus it's difficult to really grade a guy when he's playing in a German league.
If you traded back with the Suns you could theoretically get Robert Williams and Bonga but don't you think that's a pretty underwhelming draft after we were just talking about guys like Doncic up until a week and a half ago? I just feel like Williams is solid backup material and Bonga has a very high bust potential.