IAP help and combine with Local Storage?

Hello.

Im trying to setup my first non-consumable IAP to the game.

At start of layout i run this

And after i check for this

I dont now if this is going to be work because im waiting for alpha test to going live.

My questions here are:

1) Is this setup going to work?

2) After "on registration success" its better to store the registration in Local storage so the user can use it even if the game is offline?