I picked up Enemy Within during Steam's winter sale, and I just finished a normal playthrough. Enemy Within seems to have added the tactical & strategic depth I felt the base game lacked, so I'm still in the mood for another playthrough, and I figured I'd try classic difficulty.
I haven't had much trouble putting up 3 satellites in the first month, but I haven't figured out how to put up another 3 or so in the second month. There just doesn't seem to be enough time to excavate, build a power generator (or two), build a workshop to get enough engineers, and then build a 2nd satellite nexus.
On normal I was able to launch 3 satellites a month every month until I had full coverage, but I can't see how to do it on classic. Is it possible, and if so, how do you do it?