Good plan. I do think your thinking to far ahead though.Go one step at a time think two steps ahead.
Start training first, watch and learn from the sparring fighters.
Then move to it when the tiime comes and move into a ring fight if and when the time comes.
Just concentrate on enjoying yourself .
I wouldnt sign anything on age and lie.

But verbally ...I thought most women over 30 did anyway!
If you get pulled up on the age thing, You could put your hands on your hips and say;
"its a womans perogative to lie about there age"! Didnt you know