Big projects usually gets me stuck too, i keep trying to do other things just to avoid the big work. I’d say plan smaller, maybe a do a smaller build locally just to get the ball rolling then you can expand later on.
When thinking about outposts, i usually just start with one product and expand if necessary later on so i don’t have to think about how long its gonna take to build a massive factory. Also, if you are into aesthetics of things, it doesn’t take much effort to just slap some manufacturers on concrete.