Woah, woah, woah guys.
If you buy a continuous chain, that doesn't require riveting together, surely all you do is drop the rear wheel, pull the chain off the rear wheel and undo the front sprocket, pull chain out, and do it all in reverse?
I've had the rear wheel off (when I had my tyre changed), and it was a 1 man, with an extra hand of help to refit (doable alone, but not so easy). Assuming the OP is mechanically minded enough to do that, surely he could do the rest?