SQL Server 2022 Requirements

I am an SQL Server Database Administrator and I will be migrating the Appian database from a stand alone SQL 2019 server to a clustered SQL 2022 server that has Always On Availability Group.  The Availability Group will be stretched across two subnets and will employ a listener for the application to connect.

My question are:

A: Do you see any problems with the configuration I am proposing for the SQL server set up - SQL AG and listener

B: What features do I need to have installed on the SQL Server.

C: Do I need the Client Tools SDK feature installed on my SQL server - I found it installed on the existing server

D: What SQL Database permission are required for the Appian user that connects the app to the SQL server.  I like to work on the least privilege concept

Please if you have the answers to these question or if you have a document that illustrates my SQL settings I would appreciate it

I look forward to hearing from you

Jeffrey