Simple changes on steak store

Well, this site is actually almost working, there is only two points that need to be added. This prestashop site is oriented to offer services from a Steak Store online, however, it can't deliver to everywhere in the Country (Mexico in this case). Requirements or changes. 1.-The delivery is restricted right now to specific cities and states, for now i have restricted two states only, Nuevo Leon and Sonora, what i did is to change all states to another zone ( number 3 in this case) and this zone is restricted so this solves the state restriction, but now what i need is to restrict the delivery to specific cities, so, i will specify for each state the cities that are going to be allowed...in addition i will need small documentation of this work in order to do more changes in the future. Consequently we are going to need to add cities just like states! for speciic states which prevviously are connected to countries, so we need as well the back office configuration for cities, if i dont want some cities to be allowed yet ill just keep them out of zone and that's it!. 2.-Configure PayPal. (more details PM).