As a minor update, I'm not super psyched about how things have been going so far.
Communication with them is incredibly bad.
I email them, and it takes about a week for a response. This is true even if I email them instantly after they send something.

My first email to them was on February 29th seeking information. Communication was frustratingly slow, but I figured it would pick up once I was an actual customer.
I sent the first half of my payment to on March 19th.
We discussed geometry until April 13th (about one email per week).
On April 29th I emailed asking if there were any updates.
On May 6, they responded that there was a "problem with their order of tubing from Columbus" and that they were waiting for stock.
On May 31, I emailed again askind if there were any updates.
No response yet.

I understand that they're a small shop, but they do have quite a lot of my money in their hands. It's trying my patience.