Oubre is the only player we have that might be able to guard Giannis, Bridges isn't tall enough, and I think Ayton is too slow. I'm not saying Ayton is slow in general but compared to Giannis he is. Virtually all players over 6'6 are slow compared to Giannis though so there's no reason to read more into that.
Oubre has good length and is a little taller than Bridges so I'd let him try until he picks up some fouls or fails miserably. I think we'll see everyone on Giannis at some point.
I wouldn't mind seeing Ayton drop Bledsoe on a drive. If he does that then I won't critique his game for the rest of the season. That might show he's got some nastiness in him as well, in a good way.
Hopefully Booker's able to get his shot falling tonight. We beat Milwaukee in Milwaukee earlier this year. I don't care if it was a 1 possession game or not, this team can do it again if they play smart. Just because you beat a team earlier in the season doesn't mean you can repeat that later. I hope the Suns aren't cocky about facing them because young players generally are and that could end poorly for them.