This adjustable trigger looked interesting enough to me that yesterday I ordered it for my Palmetto build but it is a single stage job: HIPERTOUCH® 24 Enhanced Trigger HPT 24.
Also, there are ways to much improve the stock trigger with the 15min trigger job, if you are good with your hands. I am very happy with what I've done with mine at a crisp 4.5lbs pull but I think the Hipertouch will prove even better at 2.5lbs.....