I built a 9'6wt which had a defect, but they replaced it. Just ordered a 7'9" 3wt for my brother. Can't speak to the action etc of the one you are looking at but don't think you should worry about quality etc. A lot of folks built on them. As for where to get stuff, here's what I use:
Cork and Snake Brand Guides:
Proof Fly Fishing (great cork and snake brand guides are worth the extra money)
Dave Winslow - Winslow rods. Turns the wood inserts to order and has a great website that is easy to use.
General Rod building stores:
Utmost Enterprises - often get a discount on blanks etc through them
Ye Old English Fly Shop - blanks and assorted other parts, Brian is very helpful
The Golden Witch - very nice stuff
Bingham Enterprises - website isn't the best but if you email Karen she is helpful
The Anglers Roost
There are other places including ebay, but those are the ones I hit most often. I should add Jann's Net Craft. I don't order much from them personally but like you they are in Ohio. I find most of their blanks seem to be 1 or 2 piece but they have a lot of rod building stuff.