The 321s could make sense. The 330s probably less so, since they're -200s and not the -300s that AC has and seems to like.

Unless we're talking about very short-term leases to cover MAX-related gaps, the cabin configuration doesn't matter much since AC will install its own interiors anyway.

As for a package deal, I wouldn't count on it. I took a quick look at Planespotters and it suggests there are about 10 different lessors. Each one of them needs to decide what's best for its planes and they may have different motivations. Some may have key customers already asking for 321s. Others may have tax reasons to want to keep the planes in certain jurisdictions (or out of others). And so on. Finding a deal that works for all of them is therefore unlikely. But AC could definitely scoop up all the planes from one lessor, for example, the 6 that are owned by Air Lease Corp.