Mark me down as interested.
One word of warning, however - GMing PbP campaigns is a really long commitment, as everything takes five times as long as it does in real life. Combats are best resolved quickly, with the GM doing all the rolling: online is where problem solving and character development is at it's best.
Not to discourage you - the best games I've had have been PbP - but just remember that those are the things I wish I'd been told before I GMed my first PbP.
As said, would love to come onboard, if you'll have me.