In the country i work. I want to add 4-5 steps for country and cites. But i feel it is very much to ask users when signing up. And i need this because of the option to choose the search widens. Is there a way to make this simple.

I have 1 country only in that country are regions, in those region are municipalities and in the municipalities come cities.

If i use Multi-field plugin. And under registration and listing publishing can i chose not to add the country (since there is only one) and skip option until the city part?
Will the listings and account automatic be added to the above fields (like region and municipality and country?) if i only chose to show the last field "City" in sign up, publish listing and view account and listing, will it work?