No socket set needed Mark, just X-head screwdriver for the TPS and idle air screw, one allen key and a 8mm spanner for the throttle position screw, a 10mm spanner for the battery terminal and .5mm and .15mm feelers. Not forgetting the good old paperclip for jumping the diag terminals of course.
IAC? Don't know.
Mike - off by heart. I had enough practice adjusting it for the MoT day after day.
Ken