What is the best way to create additional products for the main product?

Question

WooCommerce

Hello. I have the main VIRTUAL OFFICE PLUS product, when I add it to the cart, I should see its additional products in it
Business Phone Number
Fax Number (sent to your email as a PDF)
I thought that I would link them as upsells and display them in the cart, but each of this extra. The item has a price note of $5/Month for the first one and $40/Hour for the second one, this should be stated in the price. Here is the best way to do it? Make a variant product, and name the variations "duration" or something like that, or stupidly create a simple virtual product, but then where to add information about the duration and how to display it. Thanks in advance