WTB - rigid fork, isis bottom bracket, and 27.0 mm seatpost

I've got a frame that I'm collecting parts for... So just in case one of you has something in your parts box that would work...

I need an isis bottom bracket.

I need a 27.0 mm seatpost with a setback. Aluminum or carbon... I guess I could consider steel.

I also need a rigid fork of some sort - either a 26" suspension corrected one or a cyclocross one would work. I'd prefer steel, but carbon is fine and aluminum would be considered. I'd actually like lightweight steel - so I'm trying to avoid using the surly forks, but those could work. The frame is lightweight steel. Brakes - cantileter or regular road style.