The circuit you are describing is not specifically doable with a regular 5 way switch and regular potentiometers, as far as I can see. It is possible with a super switch or something that's able to make multiple separate poles of connection at each point, but another big problem to solve is the separate volumes for (bridge) and (middle + neck) without mixing the signals first.
To handle the separate bridge and middle/neck volumes, you could have a dual-gang stereo potentiometer, which would act as your middle/neck volume, and keep each signal separate before the switching. It then becomes a pretty simple circuit. I also am guessing you wanted the DPDT switch on the bridge volume to switch between series and parallel hum bucking on the bridge pickup, rather series/parallel in relation to another pickup (multiple pickups switched together are normally always parallel).
I drew up the circuit but I'm in the process of moving and don't know where any of my colored pens are:
The above diagram also assumes Seymour Duncan style wire colors for the humbucker.
One complicated bit here would be the volume/series/parallel switch, especially since my diagram is not in color, but there's a number of good images for that out on the internet, one of which you can find here.