Issues Testing Azure Stack HCI on Hyper-V (Single Node) – Onboarding and Azure Arc Integration

i am currently testing azure stack hci in our company environment. i have downloaded the latest version of azure stack hci and deployed it on a single-node hyper-v vm setup for evaluation. while i can access the local azure stack hci portal, i am facing several issues when trying to onboard the host into the azure portal. challenges i am facing:
i am running azure stack hci on hyper-v manager with only one node (lab environment). could this be a limitation for azure portal onboarding?
even though i downloaded the latest azure stack hci build, the local portal shows the host as "not eligible." i am not sure why this is happening.
i tried to push two simple vms to azure arc/local using scripts, but i received an error that hyper-v components are not running, even though hyper-v is active.
i also ran into an issue with windows admin center because my subscription is not pay-as-you-go. is this a blocker for testing scenarios?
my questions:

is it possible to push vms into azure arc (or manage them locally) in this single-node hyper-v test environment?
can this be done using infrastructure as code with terraform and powershell, even without the original azure stack hci hardware?
what are the best practices for testing azure stack hci in a lab or non-production setup without purchasing physical nodes?

any guidance, examples, or workarounds would be greatly appreciated. our company is exploring azure hci, but we want to validate the setup in a lab before considering hardware purchases.