NF ATACR 4-16x42 F1.

Yeah, I know. Budget. But it is a great 308 gasser optic, since I believe it was designed for the csass competition. 30oz, little heavier than you want. But the turrets are to die for, especially the zerohold elevation turret.

On your list I'd be tempted to give the tango4 a try. The shv is pretty good, too.

Or go deep and get a s&b ultra short 5-20 since it actually is the csass optic. Haha!