If it helps, I am a pilot who has flown with, and helped train at least half a dozen ex-cabin crew over the past few years. The fact that they had 'model' tendencies or not is irrelevant. all were selected on their ability, determination and commitment. that meant that they bacame self improvers. (Studied themselves whilst still working as F.A's).
The obvious advantage is that they were already in the industry and could seek help from current pilots at exam time etc.
Some made it to F.O and at least 2 I can think of are now Captains on large pax aircraft.
Good luck to any FA that makes the move, but I warn you it is very hard work.