Which springs?

[littlened]

I want to buy some springs for my zx-5, but I'm not sure which ones I should get.

Once I do start racing it, it'll be indoor on a mix of carpet and polished surface. I've read somewhere that the driveshafts should be level or in a slight V. I'm just wondering how I achieve this?

Currently I've got some yellow springs fitted, which before I did the SP conversion had the car at about the right height, but now it's slightly raised and I cant get it to sit lower, so I'm assuming I'll need springs for this.

I've looked at some of the setups to see if I can get an idea, and from what I can see, it would be light green on the front, and silver on the rear?

So, to save me buying every set of springs available, could someone suggest which ones I should get?

Here's how it sits now.