With alignment pins removed, you should be able to get around -1.2 to -1.5. The lower the ride height, the more you'll be able to get.
For a fun daily, I'd highly, HIGHLY recommend Dinan camber plates. No additional NVH like race plates, and they give you enough that you'll won't be wanting for more grip on the street, but won't be cursing them for eating away at your tires. I ran them for years and enjoyed them, especially since they're so affordable.
I have a used pair for sale if you'd like, even have almost-new OEM top mounts with them as well.
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