Hello Kuna,
I have almost the same kit as you, though I'm using '86 944T stub-axles, 215/40ZR17 and my Cup2's are the MM 7.5et52 which should give you 3mm more clearance on the inside and your outer rim should be nearly 10mm further under the wheel arch than mine. Incedently, I measure the same 2-2.5cm between the spring and my inner rims with camber set at -1.5*..
I'm surprised you have such little clearance between the coil spring (80mm?) and the tyre if your wheels are sticking out beyond the fender edge.
As JIMP mentions there is an eccentric bolt on the inner end of the track control arm and also on stub-axle/strut clamp. These both affect wheel camber, but also allow a small (5-10mm each side) adjustment of track width irrespective of camber. Which helps when trying to fit huge wheels under stock fenders
Matt