i would use push/pull pots and wire it like this.
start with a standard tell wired with a 3way switch use one push pull pot as a series parallel for the humbucker. then use the other push/pull to swap the phase on the neck pickup.
that should give you.
1 bridge series
2 bridge parrallel
3 neck
4 neck, bridge series
5 neck, bridge parallel
6 neck, bridge series out of phase
7 neck, bridge parallel out of phase