I have the same delimma, although I already bought my springs. I bought the Eibach Pro-Kit. They're said to be very well-handling springs...more oriented towards performance than lowering, which is what I wanted. I really don't have issue with stock height.
Anyway, you could always do what I'm doing. Buy the springs and just hold on to them in the box until you can afford new struts.

I bought my Eibachs because I had a chance to get them for a pretty well discounted price and went for it.