If it doesn’t turn out female, flower it away from the other plants and collect some pollen. You never know when it’ll come in handy and you can make f2s which will give you even more phenos to hunt for free!
Always take clones. You don’t ever want to flower out a plant and not have a backup of it. Revegging isn’t fool proof and you could end up regretting it if you don’t.
Top it. Make a clone. Wait for side shoots to spring up. Take a couple more clones. As soon as you have roots or an established plant then flower the mom. Works every time.