I would def recommend the DA. Had a guy in our squad this past weekend with a ton of light strikes with a lightly sprung SAO SP-01. DA might have ignited most of those on a second strike
No, the gun will be fine. Many of us run 7pd springs in our open guns.
The recoil springs function is to compress and return the slide into battery. The gun can still fire once without a recoil spring in it.
Consumers are speaking with their participation. Irons aren't popular much anymore. Nothing wrong with that, the game is evolving.
I'm glad there's a separate Nats for Limited. I hope it stays that way so I can always go back to it after Open nats.
Brazos makes a semi custom line that's very good for the money.
I bought an open gun kit from him a couple years ago and it's still running strong. Only cost $2200 and got to put the parts i wanted on it.