I can agree with that. If you're going to do it, do it right and not half-assed. In fact a large majority of the XS650's I see for sale around here all have something in the ad to the effect of "bought to make a bobber but lost interest, frame is cut in half and motor in a box, come pick it up $1500 FIRM" or "Bobber project, Im in over my head". I think you'll get a little more appreciation from the XS diehards if it's done well so that it does the bike justice rather than a bunch of parts thrown together.
Enjoy the build, take your time, and have fun.