GC Coilovers with Tokico Blues

I've been going back and forth about getting GC coil overs. I have heard that the Tokico Blues will and will not work with the coil overs. Does anyone know for sure? I also understand that sectioning the strut housings and going with shorter inserts in recommended when lowering a car. What is the max. I can lower my car before having to section my strut housings? I already have fairly new tokico blues on my car now. I would like to drop my car about 2" and I do not take it to the track, although it would be nice.

Thanks