You will need to make the stator thicker than usual probably 20mm.

Because of the crowding I am not sure what winding space you will have ( I can't be bothered to draw it all out). Try a test coil with 100 turns. I suspect you may manage 1.2mm dia wire but you may have to go thinner if you can't get it in. You can make the holes in the coils trapezoidal so they are smaller than the magnet at the centre to get more wire in without loosing much.( 50mm outside by 35mm inside may be reasonable)