So I don't want to shut you down or be negative in any way, but in my opinion you've kinda gone about it backwards.
Since females usually take a minimum of 3 years to reach breeding age/size you probably should've started with females. Since you have started with males, they'll be ready at about 1 year old, or 600-800 grams..... ish. There are many people who have many different philosophies in this department and I don't want to start that argument.
So if you want to breed when your males are large enough, i.e. next year, you'll want to start looking for females that are at least 2 years old currently and are large enough/on track to hit 1500+ grams by next fall/winter.
I'd definitely recommend that the female(s) you choose for the albino male are het albino, otherwise you'll just be producing albino hets with whatever dom/co-dom/recessive genes the female(s) is/are carrying, which can be productive if you're working toward double hets, (i.e. double het albino/pied etc.) but visual albinos with a secondary trait are the minimum I'd hope to produce with a male like that.
As for the champagne male, avoid females with spider, sable, woma (both hidden gene and normal), spotnose, or champagne, as these combos usually are either lethal or produce a snake with a pretty severe wobble. I'm not usually a fan of champagne just because it blows almost all pattern off the animal in most 2 gene combos, but Enchi and Asphalt actually do pair nicely with champagne, I'm sure there are other cool combos out there but I haven't seen enough to know them.
Lastly, if you like the way pied looks you could mix that into almost anything and get something really cool. But it'll take a few generations to do so.
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