Woocommerce product modifications

General information for the website: We sell a snow cleaning service
Kind of development: Customization of existing website
Description of every page/module: Heres a video of the task: https://youtu.be/ih4JAMoYVys

On our homepage customer can measure there side walk and get a price of, what it coast to get i cleaned for snow. Then they can make a purchase, and when it snows we get out and clean there side walk. When we have cleaned there sidewalk we are going to our backend, where it says "Brugere" on the video, and then withdraw the money from the customers account.

We are going to change the measurement functionality to 3 products with fixed prices (so it's more like when you choose a phone subscription package). When a customer buys a product, then when it snows we are cleaning there sidewalk and then make the withdraw from there account through the back end "Brugere" - like it works now. So it's not taking any money before we are making the withdraw from the backend, and we can do that again and again when it snows and we have cleaned.

It's the functionality of adding the 3 products + the ability for the customer to take one product to the checkout. Then we can make the withdraw from the backend when we have completed our service.

It's only the functionality we need to get made - we will make the front end. The site is on a staging server snow.aversa.dk where you can make the changes.
Description of requirements/features: Woocommerce, PHP
Extra notes: