4.8% body fat eh?
So... You look like:
Ya?
Right..?
Didn't think so. I also seriously doubt you've hit your genetic limits at 23 either. Sorry to bust your balls, but it's one thing to cycle as you want more, and another because you MUST. No judgement from me on either, but I will say two things:
1. You should give it another year or two to let your body finish development. You're at the age where your brain gets the rest of the love from puberty, and it's best to let mommy nature finish that.
2. Please read the stickies that I have a feeling will be linked if tbonexl is awake.

These stickies will help you to understand WHY what you're proposing is a bad idea, and how to go about this properly when the time comes.