It really depends on the individual snake. I have a pinstripe that bred for the first time last season. When I began pairing her up with males, she was around 1350g. She ate well and gave me five eggs. Same season I had a spider female that was a little over 1500g that gave me 4 eggs. Both females went back on feed immediately after laying and are gaining weight steadily.

I'd say wait for your pastel butter to gain a little more weight. This will allow your albino time to get some more weight on her. Then pair them up this spring.