I just finished a Commander Ironman run and it wasn't too bad (on PS4)The clock seems oppressive at first but there are lots of ways to push it back, even after it counts down there's another time which will reset it.
ID actually love to see you stream it on iron man if only to see you get crushed
2 Psionics
2 Specialists w Guardian and Threat Assessment
1 Sniper
1 Ranger
Squad for the end game, pretty unstoppable