Thanks for the input. I feel kind of relieved since I didn't really set out to buy two locks, it just worked out that way.
Mark, that pistol you linked is almost exactly what I was picturing. I really like the looks of that pistol, it seems to be a pretty long barreled gun like I was hoping to build. I was thinking of pinning the barrel instead of using keys or wedges, but I like how the escutcheons around the wedges look. I see the checkered stock as a bit of a stretch for me, maybe after I get a gun or two (or many) under my belt.