Thanks for the input. Recommendations on buffers and springs? I'm told that is the next part of the gas system I need to balance.
If you're tuning the gas system, you generally don't need to change buffers or springs. You'll adjust the gas to work with the standard buffer and spring in your rifle.
With that light weight bolt carrier, you'll probably need to restrict the gas a little more. There's no point at all in following some of the common advice to use heavy buffers if you're trying to use a lightweight carrier, since the entire purpose of that carrier is to reduce the reciprocating mass, and the buffer is part of that mass.
