Will I need spacers?!?

So my Brembo's are coming off once the new 312 set-up i've ordered has arrived and been painted, but I am a little concerned how it will stand once I have put the standard Fabia vRS wheels back on.

My car is lowered on KW-V1's, currently I can just get my fingers between the tyre and arch with the Porsche Twists & adapters on, but once removed, i'm worried that the wheels will be too far in the arch and look poo!

Am I right?!?!? If so, what size spacer will I need to get to bring them out to look good again?!?? I've also seen cheap and expensive spacers... is there any difference?!?! Longer wheel bolts required?

Finally... if anyone has lowered their car and not used any spacers, any chance of a quick pic to see for myself??!?

Cheers guys

Jay