You should be aware that there will be a heavy shipping fee. I think Pit Bull is still roughly competitive with equivalent US shippers. I don't think anyone can beat their selection. The heavy shipping fee does mean that it will be cost prohibitive to ship things back to them, unlike the case for the Aussies.
I emailed Adam before purchasing, and I recommend doing that. He inspected my kit to make sure t he neck was straight, and their were no major issues. I still had a few issues with the way my ES body lined up, but Adam could not have seen that without doing a full mock build. If you have major issues with something (I had a part that was not right that I needed to replace) Adam is very good about reimbursements or credits, but you can't expect him to eat the cost of shipping it back.
I had an ES kit, and there have been some issues with the way the neck and pre-drilled holes line up. This is not unique to Pit Bull, however. I have one from US shipper now with exactly the same issue.
My impression is that the folks who have purchased solid body kits have rarely had problems with fit and having pre-drilled holes line up. I would not hesitate about getting a solid body kit, but I'd ask Adam to take a good look before shipping.
The quilted maple tops are pretty, but fragil. Remember if there's an issue with it you won't be able to send it back.
Consider carefully if there is anyting that you might want from Pit Bull to be shipped with it... upgrade parts...bone nuts...stuff like that. Adam may be willing to package them together and save you on additional shipping.
It bears noting that the cost of shipping a guitar back to a US shipper is not free either. If you have to send something back to a US shipper you'll pay at least half what you pay to Pitbull. The forum here is great. Superhelpful, so that's something to think about as well. There seem to be lots of folks in Europe, UK, CDN, and a few diehards in the US as well as the Aussies on the board.