is 6 months enough for LEVEL II? studying, currently, background, only, 2011

Sunshine4ever

So I'm currently studying for 1 for the December 2011 exam. The first level II i can take would be in June 2012. So I'm wondering if that is enough time. If anybody here studied for 6 months for level II and passed. I'm pretty good at comprehending Level I stuff the only concern I have is retention. Here are my specs:

* my current job is easy going, I work 8-4. Pretty much never have to work overtime.
* Plenty of time to study, I can probably invest 500 hours for level 2
* No background in finance, other than level I.

Please let me know. No wise remarks please>