One thing I would absolutely recommend is to swap out the stock tubes ASAP. I used some of the money I had saved to purchase a matched quad of Tung Sol red base tubes and this yielded a very large sound quality increase. If you do go this route, make sure to listen to the stock tubes for a few hours, get a feel for them, then switch to the Tung Sols for a surprise ;)
At risk of sounding cliche, the Tung Sols really gave a nice 'holographic' effect and made the soundstage appear deeper. It is also a very quiet tube stage, with the hiss barely audible from an 8 foot listening position.
I also seriously considered an AudioGD piece for a very long time before making the decision and they look to be an excellent company with strong design principles, and I hope to hear one some day. Thanks for all the help everyone!