Thanks a ton for that reply. Length tends to = education as far as I'm concerned Ya, the different lug size occured to me later on after posting last. I'll probably go with your second option and try to find a lug set to match a tube set. It's unfortunate there aren't many other suppliers that can offer full sets ready to go.
As for OS or Double OS. I've actually got no clue. As this is my first bike, it's more about the build than the practicality. Cheap is better for this one.