All of these questions are valid and need to have swift and easy answers that we can provide in the #bitcoin  community in order for merchants to adopt.

We have a great opportunity at the moment and people are receptive.

I myself are digging my way through these question at the moment while trying g to set up a self sovereign payment solution.

To set up a @BtcpayServer and have all the connections required with hosting, exporting data to accounting etc. is a challenge. One that I will not back down from but still a challenge.