Is it looking likely that they will hit the target? They already had HN bump and most Ubuntu fans were made aware of the project already.
That price level seems to have been pretty popular, and at that price level they may be able to hit the target. I'm not sure why they absolutely need to sell only a 128 GB version.
Also, they'd be insane not to add 802.11ac Wi-fi.
I'm just guessing here but it might be more expensive to make smaller batches with different models the to just make one.