No one should be ordering at this point, period.
They need $3.5mill in pre-orders to fund the chip run, similar to the once off funding issues BFL had for the first wafer run.
My main concern is the 250watts of each chip. I don't know of any chip with that much power consumption, it will need fans like a whole GPU card and more. The package will need a massive TDP rating. eg. a Pentium 4 Extreme Edition, one of the most power consuming CPU's of all time, was about half that rating.
I won't be ordering until these things are out in the field and proven. I am not a lab rat.