The shore diving at SCC can't be matched anywhere on Cozumel. If that is important, then go back there.
Really?
Plane tickets for those dates are so cheap, with Tuesday travel the lowest at $314 RT - I don't think you can find dive & hotel combination like you requested for less that Scuba Mau & Villablanca. The link given above hotelpackages quotes some great prices (get the Superior room!), but email them - see if they have any better ideas.
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A description from Scuba Club says "The jagged ironshore limestone wall gives refuge to many juvenile reef fish, lobsters, crabs, octopi, and even an occasional seahorse"
That's what I'm looking for, five to twenty fsw with overhanging ledges. I would guess the entire coast is similar ironshore but only a few places to enter. Does the wave action tend to bash one against the shore at Scuba Club?
Does Villablanca have the same topography?