Have a look
here.
The SWB Bentech bike can be built up as a very competent machine. I should know - I have one. (Don't be put off by some of the photos on the Bentech gallery pages - some are clearly only toys. Mine has done several thousand miles).
The great thing about this design is that you can buy the plans and do it all yourself from scratch, or you can buy a pre-bent kit of tubes and non-standard parts, or you can buy a frameset, or you can buy the frameset already powder-coated. The only thing you can't do is buy a complete bike (but I'll build you one if you like!). Dom Bencivenga is a nice guy to deal with, and will happily customise your frame (to take a 700C rear wheel, for example) if you wish.
Ask around on the Bentech forum, and you can probably find someone who'll lend you their jigs (I bought an unpainted frameset).
There's also a forum for Bentech builders and riders, so if you need advice specific to this bike, there are people who will provide it.
I'd recomend it.