Depends what you mean by "the right combo". A pair of Normals, both het for Amel, Anery, Bloodred and Caramel, would certainly give you some exciting possibilities for offspring.
According to my Marcel Poots Genetic Wizard*, you'd STATISTICALLY get about a third of the hatchlings still visually Normal with sundry hets. However, you'd also get another 40% as a mix of visual Amels, Anerys, Bloodred or Caramels (with a range of hets).
After that the odds get longer, but you might get visual Snows, Amel Bloodreds, Anery Bloodreds, Butters, Anery Caramels, and Bloodred Caramels (quoted as a statistical 3.52% likelihood).
If you want to be even more optimistic, coming in at 1.17% likelihood, you could get Snow Bloodreds, Snow Caramels, Sulfurs and Anery Bloodred Caramels (sorry - just quoting from the Marcel Poots Genetics Wizard here, so don't know any trade names).
Even less likely is a Snow Bloodred Caramel, quoted as a 0.39% probability.
DISCLAIMER: All stats quoted are statistical probability and not a prediction of what will actually happen in real life - Nature don't do math any more than it reads the books. In a clutch of 20 eggs, you might still get only the more common morphs and none of the rarities that we'd all love to see.
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*I wouldn't dare try this without!