I do not recommend daily handling for a BP, especially not until 24-48 hours after feeding.
Here's a sticky that talks about setting up a tub (rubbermaid in your case): https://ball-pythons.net/forums/show...e-Basics-*DUW*
Almost exactly like setting up any other enclosure, of course each has their own tweaking, aslong as the husbandry requirements are met and you're using a thermostat with your heating devices.
I'm not sure on the pricing as I've never had to pay for sitter services. Hopefully someone can chime in on that.