what you seem to obtain is a wiring like the one below, which can be done with a standard 5-way switch.
Here are the combinations you will get:
1 bridge humbucker
2 bridge split (you can choose the coil by choosing the coils during the wiring)
3 the chosen coils of the bridge and neck (I guess I have the outer coils, i don't remember the way of installation)
4 neck split (you can choose the coil by choosing the coils during the wiring)
5 neck humbucker
I must say I found it, this is not a wiring I created, it already exists.
This wiring is great, I found it once on a website and copied it on a paper quickly. Since that time I couldn't find it anymore on the web.
Here it is again, but I'm sharing it.
This might be the wiring which DM was taling about.
Hope this helps.