About an hour...
Firstly unscrew screws holding the plastic cover on around the shaft of your steering wheel. Remove these. Then lower the tilt of the wheel to its lowest possible. There are two screws (from memory) holding the cluster plastic cover to the top of the dash, remove these.
Then the plastic front facia should pull out (might need a flat headed screw driver to lever it out)
Then your basically into the dash, so the screw from there are visible. There are 3 clips holding the wires in the dash at the rear, these are a bitch, and will take the most time stuffing around. For advice, once the LEDs are in, DONT fully clip all of these back in, push them enough so the dash has power, but not so they are clipped. This is because if you have the polarity wrong on the LED and some one turn on, your back to square one with getting the clips undone.
The cluster itself is very tight to remove. Work around a couple of ways, angles tilts etc til you get it. From then its time to put it all back together. CHeck the LEDS are working first.
As for the Triple gauges, well the air con vent below simple pops out (Flat head screw driver again). Then there are i think 3 screws, and the triple gauge cluster is out.
As for Air con, i dont know cause i didnt do these.
Hope this helps!