NK Guy , Mar 01, 2010; 02:58 a.m.
The best way depends on how much you want to spend and how you want things to work.
Do you want to be able to trigger the flash units for metering purposes from the Sekonic? If you do, then you'll need to buy PocketWizard-compatible cards for each of the Bowens units, and standalone PocketWizards for the Elinchrom units and your camera.
If you don't care about control from the Sekonic but want to save money, then you could buy Elinchrom Universals for the Bowens units and the camera, and use the on-board EL-Skyports on the D-Lites. (are you sure you have the D-Lite 4, incidentally? They don't have built-in radio transmitters - only the D-Lite 4 it does, I think)