AlwaysOn is a great idea IN CONCEPT.  If someone suggests this to you, do yourself a favor and take Brent Ozar's quiz (link below).  Brent is one of my favorite SQL Server guys.

What goal are you trying to accomplish?

https://www.brentozar.com/sql/sql-server-alwayson-availability-groups/
(the video is under Gotchas and problems with AlwaysOn Availability Groups).