Three Double-Pole-Double-Throw (DPDT) switches will handle the task. One for each pickup to select series/Parallel. One to reverse the Phase of one pickup releative to the other. The switches can be push-pull pots or separate switches.
The DiMarzio website has wiring diagrams to show how it's done. Click on 'Pickups' and then select "Installation and wiring".
If you're not familiar with soldering small wires, you should get a tech to do the installation.