Don't even bother with scenting with a baby you know was eating unscented at the breeder's. To thaw the pink, put it in a cup of HOT water for a couple minutes. Get everything ready, then right before you are ready to go get the baby, run the tap water as hot as it will go and hold the pinky under it, in your fingers, until it is that temp. Put it in the cup.
Also, I see you put the cup in a cupboard, but I feel it is important to cover it up, too, so he can't see out.
And I would wait three to five days, no handling in between, no bothering him and changing the water and checking to see if he's okay, and then follow the steps above, immediately going to covered, in the dark, do not peek for an hour.