I like that you're doing the build out of the normal order, where the lock goes in before any butstock carving. The way you're doing it allows you to get a feel for the shape of the wrist before setting in the lock which could be an advantage. Not really any downside, as it's pretty easy to see where the lock and trigger will go once the barrel and breech are inlet.
It's not as hot here in southeast Virginia, but boy is it humid!