thats a lot of toe at the back... It also comes down to what kind of track you're hitting. I try to run neutral toe at the front, to aid initial turn in, with half a mm toe-in each side at the back. If it's going to a fast track, i'd run 1mm toe in at the front, to aid straight-line stability.
Its all trial and error, a compromise. Have a play and find out for yourself :)