Lav is going to have to start giving minutes to JDR and Alibegovic whether he wants to or not. It's better to get them experience now than force it on them with four minutes left in a big game when CO and/or Dom are fouled out.
They are only going to get better with time. I disagree with those that write that Alibegovic is just a big SF. I hate that that type of player more than anyone, but I think him going to the outside more than he probably should is a product of how uncomfortable he feels in the offense right now. Playing a few minutes every couple of games won't help that. Both he and JDR are a liability to pick up quick fouls (Alibegovic at an alarming rate), but they both hustle their butts off and box out on every single attempt. Alibegovic is exponentially more skilled and coordinated, but he also looks that much more uncomfortable.