Hmm, I think if you're already starting to get bored you should just go ahead and restart. Golden shovels are relatively inexpensive (compared to 3DS games... ;_ and you can transfer your stuff when you restart. It might also be more fun to decorate a town you really, really like the layout of than one with a random map, especially since it's hard to get motivated to decorate a town you're planning to reset soon. If you like making goals and working towards them though, it might be better to keep your current town for a while longer.