PizzaTotinoBoy
I am...Pizza Totino's Boy
Yeah, you can sell off your town and keep your catalogue/PWP's too, and as far as I know you can keep re-selling your town as many times until you're satisfied with your map (I'm not sure on the details how so you might have to look into it).
All I know is that this'll be worse than SR'ing for a shiny. Ugh...This won't be fun but I'll endure it. If there IS a way to keep my PWP's that would help wonders, I need my brick bridges.