I'll make a more official post but we should have our own branch of cgminer available by the time sticks are received- which is good news for you overclockers who want to push sticks over 250 MHz.
Excellent

Though I haven't had much trouble getting past 250, the new initialization routines should make it easier to get it above...wherever I left off.
What kind of cooling would we need to keep a stick at 250mhz? xD
A small fan will do. I've always been a fan (hah.) of the
Arctic Breeze Mobile [arctic.ac] - a USB-powered fan on a flexible neck for easy positioning with plenty of air movement and relatively quiet. Though at 250, it's really not getting all that hot and even more silent options are available. As long as you keep the hot air moving off of the heat sink, there's not that much difference between a gentle breeze and a hurricane.