Strategy advice for advancing

I say concentrate on Springfield at the mo, because when it comes to Krustyland you'll need certain characters to be there making ticket money or doing tasks to build it up, so if I were you I'd catch up on your current SF tasks so they don't clash when your KL tasks begin. :D

Also Squidport can become quite expensive with the increasing tile costs, so if you're strapped for cash it's worth taking your time on that.

edit for typos