I wouldn't recommend Avalon atm. Though for first batch you would of been earlier then butterfly labs. Butterfly lab atm is 60NM, which in return will be like 1/2 the size and 1/2 the power.
Much more efficient, and better design and technology.
http://butterflylabs.com/If I was you I would order this one.
(60 GH/s Bitcoin Miner - $1,299 BitForce SINGLE SC)
I already ordered 3X60, and 1X30
Because, I knew of the advantages in the technology.