Rondo/Jackson
Derozan/Williams
Rush/harkless/green
Aldridge/bargs/green/udoh
Hibbert/bargs/udoh/ezeli
I really like your "big three", but don't like a whole lot else about your team. I think DeRozan is a bad fit in the back court next to Rondo, and I don't think that Brandon Rush is a starting-caliber SF. I think your bench is largely weak. Lou Williams is a good fit, but Reggie Jackson is the only player who has the potential to be even above-average.
I know that's a harsh assessment, but I think you made a mistake with your trade. You had a real strength, in that you had four very good front court players, and now you've only got two. Your biggest strength is now pretty average (or even a bit below average), and your biggest weakness (your back court) hasn't improved that much when you consider that DeRozan will play worse next to Rondo than he would have Felton.
In short, I think you went from having the most talented team in the league (with the pieces not fitting together well) to a significantly less talented team, with the pieces still not fitting well.
The good news is, there's still time to improve. Rondo is certainly a very nice building block, and the Hibbert / Aldridge pairing should work well. That three man core is better than most other trios in the league.