How quickly does a beginner outgrow limbs?

Morning folks,

I'm about to take my last session of my beginners class tonight (a mock tournament to teach us about scoring I believe) and have already signed up to join the club as soon as it finishes (going on Wednesday night to do the paperwork, get keys for the range etc etc). I've purchased a lot of my own gear already, pretty much everything baring Limbs, Arrows and a string. All of which I'm loaning from the club for a 3 month period.

Now I'm well aware that I need to start with...

How quickly does a beginner outgrow limbs?