In my humble opinion, I think you should keep the eggs closer to 80F. When I've kept king and milk eggs around 84F, I found they hatch earlier, around 62 to 64 days. The downside is about 1 per clutch had a deformity, like a bent spine or didn't develop properly and had to be euthanized.
When I reduced the temperature to an average of 80F the following year the eggs didn't hatch until 72 to 74 days, but none of them had any deformities.
I guess if you have excellent "control" of your incubation temp (and haven’t had any problems in the past with your other eggs) then 82F should be fine. I feel the warmer temps are prone to developmental problems, and should be avoided.
Good luck,
R
http://forums.kingsnake.com/view.php?id=1070845,1070935
