Also, why not dream big? Getting 600-700 PMK/s is an improvement, but an investment in a modest GTX-260 is currently getting me nearly 10,000 per second. It's understandable that others may not have the kind of money to invest in a purpose-built WPA cracking rig, but there's always craigslist and eBay for some better deals(not plugging them, just saying).
No doubt, pyrit is an amazing tool. If you watch the blog, it seems like at least twice a week the author has added some new tweaks and tricks to really make it zing.
Report back and let us all know how it goes.