I scratch my head with regard to a steel fork, myself, but that's just me. Personally, I would've looked for a Ti fork first, then carbon, then aluminum. The reasoning is that Ti frames are already fairly supple, and steel is also quite supple - just seem like it could be "whippy." Then again, I'm quite a bit taller than you, Machka, so....

What other bits-and-pieces were ordered from Chain Reaction?

As far as a green helmet is concerned, I'd look at one that has far more ventilation than the Micargi. One option is to get a black or white helmet that fits you well and is well-vented, then get some British racing green detail tape (like they use to create pinstripes on cars). Add the BRG flare as necessary.

Keep us informed about the build progress - pictures a'plenty are a must! Love the frame!