Negative Camber in the front = tyre wear $$$

Ive just bagged my mazda and ive got a bit of a question.It is layin out the front cross member on 18's but im a bit worried about the camber in the front.I'll prolly cruise with the front at about 4" off the ground, but i think it will rip up the inside of my tyres.I am runnin 215 35 18s so there isnt much sidewall to take up the camberAny ideas of how i can fix this, preferably without spindles?

or, has anyone just left it? how is the tyre wear?