Yep, it's official, you're crazy Merric!
On a slightly more serious note, I would be worried about burning out or at least not putting enough effort in to each game if I was running that many games at once.
Having said that, I currently only DM a game once a fortnight and even that is currently on a 4 month hiatus due to the birth of my second child (should be resuming shortly though), so take my comments with a pinch of salt.
Olaf the Stout
As it stands, my fortnight is going to look like this:
1st Thursday evening: Wargames with Randy
1st Friday evening: D&D Greyhawk - self-created adventures
1st Saturday afternoon: Boardgaming
1st Saturday evening: D&D Living Forgotten Realms
1st Sunday afternoon: D&D Adventure Path
1st Sunday evening: Serenity RPG - self-created adventures
1st Monday: sleep (I work parttime and not Mondays)
2nd Thursday evening: Wargames with Randy
2nd Friday evening: Star Wars RPG as a player(!)
2nd Saturday: boardgames
2nd Sunday: sleep
So, I have to create two adventures per fortnight, and I can run pregenerated adventures the rest of the time. I'm very good at preparing pregen adventures, thanks in part to my reading speed. It should be fine. The big difference will be running the Forgotten Realms instead of boardgaming on those Saturday afternoons.
I came to an agreement with the other main DM to split sessions with him; if I can wrangle it, I'll drop back to one session a month or fewer - or act only as an emergency DM.
Cheers!