[E-commerce platforms] Integrate subscription and hardware pricing in one checkout

Hi our company is trying to launch an E-commerce store that will allow us to serve smaller customers much better. We would have less then 10 items total. Basically all the same product kits just diffrent sizes + a few add on options that work with any kit. The problem I am having is that our pricing is hardware and shipping upfront for the actual product and then we charge a yearly subscription which is essentially a service fee, if a customer stops paying it, we will deactivate their system. I need in 1 checkout for 1 item to charge both of these things and start their subscription. The subscription can not be optional, I don't want to make customers do 2 checkouts, and our subscription is not a monthly payment or delivery. Shopify does not have subscriptions native and the apps like Appstle seem annoying to pay for and complicated to setup. Is there any platform built for my companies type of pricing? thanks.