noneya,
Personally, I think that sounds like a great approach.
Ultimately, as you say, the owner/principal is going to be the person who has to like the the FA. As an FA, we are in their flying "home", and if they don't feel comfortable with the FA, then it is never going to work. The fact that you invest time and money in someone to work in the cabin is excellent. Please don't take this the wrong way, but I often feel as if the 3rd crew member, the FA, can a lot of the time be an afterthought and can be, but not always, just thrown in there and told to get on with it irrespective of experience level.
It is nice to hear someone taking the time and money investing in what goes on behind the flight deck…
TS