Efficient hook up

Out of curiosity what is the most efficient way to hook up a genesis, 32x, and sega cd to a tv. I know the sega cd takes care of the genesis's stereo out problem but after that I get a little lost in wires. Should I use the sega cd for audio out for everything? or splice it with the 32x's audio out? and the video I think it is the easiest just let the 32x do everything, right? (note everything is model 1)
I use the my MCD for audio, and I have made a special video only cable for the 32x - I just cut the end off one of my many RF adaptors and soldered a normal RCA plug to the end.

This means I only have the three plugs to hook up to my TV.

Note: Everything is model 2.