Heres what I'd do......
Go here and talk to kevin. I ordered mine last Thursday. Got it in the mail Friday. Got a SD3G for $211 shipping included, via Paypal gift. Think this is my third Geissele from him.
Get a SSA. Use it. If you think you want to upgrade to a lighter pull, sell it (and MAYBE lose $10-20) and use the proceeds towards a SSA-E.
Geissele triggers will sell, within 1 days on M4carbine or AR15.com. Hell, that SSA will probably sell within 10 mins.