Coastal Bend Ballet

I am going to take 2 jazz classes, 1 modern,1 lyrical, 1 hip hop, and 1 tap class in the fall. My question is, how many ballet classes should I take if I want to go pro?

This is a general question for all dancers, not just for professional ballet dancers.

How much ballet training is sufficient for a dancer to have “technique” and effectively acquire and excel at other styles of dance?

I know barre and centerwork are ubiquitous even at the professional ranks, but I’m referring to before that.