It's good to hear that phlux is going with the phlow!
It really is not that hard to build it yourself, if you prepare yourself and your environment in advance.
Once you have selected all of your parts, download the latest drivers for everything. The included disk(s) may work fine, but usually are a few generations behind.
Block a day with that being the only priority. No distractions. Zero. Distractions create errors. Print Paxx's instructions for reference.
You will need a large enough, spotless, work table or bench.
Before I had an actual workbench dedicated to 'trons, I used a large table draped with a white bed sheet for cleanliness and tiny part visibility.
You will want to lay out everything and "mock" build it, by the manuals, without actually installing anything.
That will help you organize your manuals, fasteners, tools, and familiarize yourself! Organization phlows.
An extension cord, with 2 or more sockets, taped to a table leg can be used for power and especially grounding.
Get an anti-static wriststrap and figure out how long to make it's extension so you can reach every corner of your work area without removing it.
I wear one constantly. Before making an extension, if I took it off to reach for something, I often forgot to put it back on. Not good.
Do not remove anything from it's anti-static protection without being grounded.
Along with your local talent, there are plenty of us that can offer support here too...Don
BTW: MS has released Win 7 SP1 to disk. Rather than waiting for update D/Ls and installs, that should save a lot of time.