I'm looking to set up a platform where users can compare internet providers in their area and apply for services seamlessly. I plan to list various internet providers, allowing users to choose and compare their services. Upon selecting a provider, users will be directed to a form to fill out their details. Once the form is submitted, the lead information should be captured for further processing by the admin. 

I have a few questions regarding the implementation:

1. What would be the best approach to list internet providers in Odoo? Should I use a specific module or functionality, such as an eCommerce product?
2. For capturing leads from the application form, should I integrate it with the CRM module in Odoo? Or is there a more suitable method within Odoo for managing leads and conversions?
3. Additionally, I would like to send users a payment link after discussing their requirements. Is there a built-in feature or module in Odoo that facilitates this process efficiently?

* I am planing to develop website in Odoo and have experience in custom module development as well as creating themes.