Specific spacer query

[Jack-D]

I've done a search but couldn't find what I was looking for.

I've currently got 182 alloys, cooksport springs and 15mm rear spacers.

I'm wanting to get some 20mm front spacers but also some Turini's in the near future.

I know Cup Turini's have a lower offset than the Trophy ones (which are the same ET as my current alloys?) so my question is, would 20mm front spacers and my current 15mm rears be too much if I were to end up getting Cup Turini's?

I hope that makes sense.

Thanks