For me first logical step is to ignore the getting there part. And prove that we can actually build colony here. In suitable location say for example Sahara or

For me first logical step is to ignore the getting there part. And prove that we can actually build colony here. In suitable location say for example Sahara or Antarctica. After those technological challenges are solved next step is to see how to get it to orbit or make same in orbit. And then we can start thinking how to get all the stuff over there.