Actually, I think you've got a fun game. Nobody able to railroad makes countries very hard to defend as you can't move defenders around all your cities. This will get very interesting with high speed maritime transportation and also paras. When invading, suddenly building airfields is going to be crucial.
There is also no point in building hospitals as 20+ cities are out of the question, so you might as well space your cities OxxxO apart or even OxxO and limit their growth to 6 and 12. In fact, you may find that many of your larger cities are going to be coastal - once you've given them harbors. So do add more cities in your centre.
You probably do not want to be in Democracy, because you can't get the population bonus and you are going to need lots military to defend your cities - so this looks like Communism and / or Republic.