I don't think that's too small at all. The secret is knowing how to use it-- and it's not only about the cock. Sex is so much about chemistry and anticipation and atmosphere and foreplay all that (for me, at least)... Not to mention love and security. On the other hand, a little danger and anonymity can be fun too. I guess my point is, I think at 4.5 X 5.2 you'll make a lot of women happy. We're not all size queens... Anatomically I can't handle a penis larger than average.
You know what is a HUGE turn on for me, even more than a big cock? A quick wit, and an educated, curious, open mind. Which would make Joyboytoy79 THE perfect man for me... But he's gay. Sigh...
Wow that was a tangent.
Anyway, have fun and don't worry about your size. It's perfect for some of us!