An obscure forum eh?
I was tempted to think that most people would do all the research FIRST, before spending a couple $K on gear; and would only buy gear that's already proven before they go and start modifying and going outside the box.
Who suggested the Petzl Stop descender?
Anyhow, it just looks like you're getting all gear fanatic about it before you know how the stuff works. $1500 for a single piece of gear which has limited potential compared to the current systems seems like a fair stretch.
Have fun, just try not to kill yourself.

(or anyone else)
Sounds kinda silly to have to say huh? What'd you have done had your wife not been home and you were hangin there bent in half?
I'd suggest you get a chest harness. Helps keep ya upright if you're not able keep yourself up.
My only suggestion as far as the keychain biner, is to make it a different color from your safety biners. The other's may have some other suggestions for that though.