Good advice above. One important thing is like to add:
Ditch the feeding tub. Feeding in a separate tub is old school and proven counter productive over time. There just isn't any benefit at all to using seperate feeding tubs.
Feeding in a separate tub will...
A) ...increase the chance of a refusal. Moving the snake stresses the snake. Stressed snakes don't eat.
B) ...increase the chance of regurgitation. Moving the snake after it has eaten can stress the snake, potentially leading the snake to regurge it's meal.
C) ...increase YOUR chances of being bitten. Snakes often remain in feed mode for hours after eating, increseing your chances of being tagged.
I've always fed inside my snakes enclosures. I've never had an impaction issue. I've never been tagged or even struck at within the enclosure.