It won't be pretty. I live in a place characterized by rapid development and construction everywhere as new housing stock is added. This means that new roads need to be opened to access idle land. These new urban "roads" are rough, and they often remain so even after the surrounding development is complete. I know them, I live them.

If your roads ain't smooth, you don't want anything with a wheel/tire below 50-305 and you don't want higher pressure, narrower ISO349 wheels that top out at 37mm wide tires either. A fat 57-305 tire, for example, will approach the diameter of a 37-349 tire, but will be more cushy and comfortable due to the wider, taller carcass and lower pressure. Don't fall into the 349 trap.