I've never done this on an ek but on my crx I just followed the piping from the condenser into the firewall. With the dash out it was easy to see what had to be removed. The part in the car behind the dash is the evaporator, in my CRX this part had to be replaced with a part from a non AC car in...
Ferodo DS2500's are a good replacement over standard.
As for the sets on ebay I would have thought that a set would mean 4 pads ie enough to do both sides as it would be unusual to only change one side.
Sounds as though you have upgraded to larger brakes. This means that your master cylinder is having to travel further to exert the same force on the brakes. The solution is to upgrade your master cylinder. The 1" master cylinder from a dc2 or mb6 would be sufficient.
I still fail to see why you would spend £50 on pillowball bearings when they will have no effect other than making your ride harsher. "The pillowball bearing increase steering response and allows camber adjustments on models with MacPherson Strut Suspension" - Taken from Meister R's site.
I was under the impression that pillowball top mounts were pretty useless on double wishbone suspension. As meister R want you to pay more for it I would look into what it does first.