Hi John,
I'm no expert mate but that's why i've never had my car on track.Standard discs and pads..
I was told they just get too hot , if moneys tight i'll be going for standard discs but will go for ferodo pads, but this is still not ideal for track ( but i think ok for the road). Ideally i'd like to try the Godspeed kit, my mate recently fitted these and is more than impressed but he doesn't track his either.
I've had my car remapped so it feels like my brakes are on the limit at the moment. If money was no option then i'd love a set of AP's
ps; Charging you for the pads seems weird since they charged Subaru for the rest, but as i said " i'm not expert bud"..Hopefully someone will come along soon and give you the advice you really need.
regards
Frank.