I've spent the few hours I've put into the new region just practicing balance. I have a very small city with 10k population, and I improve it slowly to keep jobs/shopping/population in check while everything moves up in density. Even with only 10k pop, I'm making 5.7k / hr. This allows me to easily afford education, transportation, utilities, etc.. as I need them. I've tried just filling the entire plot with zoned area and trying to keep up, but it seems much more logical to push your approval rating over 80% and work on density, then expand.
I haven't had any traffic problems so far, but almost all my roads are avenues and the city is symmetrical so the shortest route from A-B generally doesn't cause a bottleneck unless people are entering/leaving the city in mass.
I haven't had any traffic problems so far, but almost all my roads are avenues and the city is symmetrical so the shortest route from A-B generally doesn't cause a bottleneck unless people are entering/leaving the city in mass.