Well I don't expect to do it very fast. I am also working with somebody, and first I want to setup a framework, rather than expect to finish everything fast. The game does not use pathfinding, you just move from city to city by picking the next city/region, and a time of travel appears, and when that's done, you are spawned in the next city.
I am still in the phase of trying to pick an already developed engine, but I am aware that the best choice might be doing it from scratch, which will be more difficult and time consuming, since I will first have to really enhance my programming skills from start.
Thanks for the answer