So the reality is that these 4 possibilities is what you might get from him:

6.26% 2/32 Yellow Belly
12.52% 4/32 Yellow Belly Het. Piebald
6.26% 2/32 Yellow Belly Het. Albino
12.52% 4/32 Yellow Belly Het. Albino Het. Piebald
It's definitely a gamble that you will get both snakes Het Pied. Again, personally I wouldn't do it.