get the custom frame to get the nice fit, quality materials and build and sweet feeling ride you want, and go easy on the cosmetics like lugs, decals, and paint.
i don't know what options bob jackson or others offer, but maybe they'd build you a simple, luggled frame, finish it with a durable single-color powder coat, and go easy on the decals (i love how the only markings on johnny cycles frames are the simple hand-written logo on the chainstay).