I couldn't help but notice an end of an apple cable in the picture of the os 9 boot up. I'm hoping its a adc to vga adapter. Is it? I really want to see a proper picture of one.
Ive seen one picture of a similar looking cable on an auction on ebay once, bundled with a cube power supply. I know they used to make little boxes that had the adapter and power supply for use with vga output.
Looking great btw! Also have you considered a server 1u cooler, with a blower style fan, I bought one ages ago to use in some mini style build, never got round to it, hopefully soon though. Anyway, it does make some noise, but i guess an aftermarket fan could be put on, to blow air down onto the heatsink and across the motherboard. Might not actually be that useful, anyway, the one i have is a Dynatron, but akasa make them too.
http://www.dynatron-corp.com/en/product_list.aspx?cv=1-4-281
http://www.akasa.co.uk/update.php?tpl=product/cpu.list.tpl&type=CPU coolers&type_sub=Low Profile