I'll give you guys as optimistic a view of this series as I can and I'll stick with Windy's report of minimum of 2 weeks missed for Love.
LeBron faced this EXACT same situation in the conference semis against Indiana in 2011-2012. Bosh went down with a groin strain in the 2nd quarter of Game 1 and missed the rest of that series as well as half of the Boston series before coming off the bench in games 5, 6 and 7. Bosh was the lynchpin of that Miami defense and their only hope of producing points outside of a VERY gimpy and inconsistent Wade and LeBron of course.
LeBron in that conference semis, with Joel fucking Anthony playing center against Roy Hibbert, and having to switch off guarding David West with Shane Battier, averaged 30, 11, 6 and 2.7 steals per game on 50% shooting. Down 2-1, he had a game of 40-18-9. That LeBron completely focused on working in the post. I think this LeBron will focus on the same thing. Not sure how Chicago will elect to play him in the post, but he knows against that team that driving all game is not an option.
Kyrie is going to have to grow up QUICKLY in this series. Mozzy has to stay out of foul trouble. TT has to dominate on the offensive glass, and Shumpert has to play amazing defense. Simple as that.
As for defensive matchups, LeBron will have to guard Butler and Shumpert will have to take Rose. Kyrie will probably be cross-matched against Dunleavy/Snell. At the start of games LeBron will probably conserve some energy and guard Dunleavy. The weaker of the two forwards defensively will guard Noah, who is 0 threat in the post. Mozzy will strictly guard Gasol, which despite Mozzy's troubling post defense, has actually been a good matchup for him.
This is the series where you have to rely on the vets to get the job done. If they don't, the Cavs won't win the series. This will go 6 games, possibly 7. LeBron has the reputation now as the best player in the world because he now can be counted on in these moments. You guys wanted 2012 LeBron? You just may see him in this series.