Ditto on the size differences.
I typically beging to spray mine down a few times a day for about a week to two weeks before putting them together. I only keep them together for the night, then seperate again. I'll pair them up again in a few days.
I place a nesting box in with the snake post lay. They will lay them in the box. Check this every morning first thing. Know that on occasion the female will double clutch. They may lay again after about 90 days.
The eggs, I incubate at 84DF for 100-105 days.

Hope this helps
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Doug Hotle