I ran my 5Zigen springs on my stock struts for around six months for the same reasons, the car actually handled on an autocross course a little better, but it didn't do as well on bumpy roads. Heck it still doesn't do as well on bumpy roads. But it grips in the curves.
I would try the Eibach pro kit or the Whitelines with the stock struts.
I would try the Eibach pro kit or the Whitelines with the stock struts.