It goes without saying that getting both back ASAP is ideal but if I had to pick without a doubt I go Bogut and here's why...
After having watched the first unit play 3 preseason games one thing is for certain the interior defense is a train wreck. Lee is a great asset, but as for guarding a star player goes.... Ummm let's putit this way you need help side defense and he isn't getting it. The effort is there but the Ws are consistently overmatched down low and it is painful to watch.
But damn can they shoot the rock... Curry included and that's the other problem with Curry (and some might take issue with this) but Curry is not a pure point guard he is a scoring guard... And outside of the Heat every team needs a distributed first/ shooter second point guard.
For every great scoring point guard I'll give you ten even better point guards who were looking to get teammates going before looking for the shot. The point guard simply doesnt work. If you do get them both back that's great and If I were Jackson I'd be contemplating starting Jack at PG Curry at 2 and having Thompson as a swing man/Very very small forward and try to kill folks from the outside with Lee and Bogut holding down the middle.
While that makes the team a bit small at least your big men will always be fresh and of course the Ws had success with this kind of line up with Run TMC... I say bring it back.
That being said I still think the lack of defense inside could kill them much quicker than the lack of Curry's jmper so if I had to choose I go Bogut. You?