In that price range I'd go Tikka, especially since you want a synthetic stock. If you'd prefer nice wood, I'd say CZ. Winchester is also good.
But yes, some of your requirements might need adjusting. Bolt actions are generally not iron sight guns, except of course the millions of military surplus guns out there. If .308 is your choice (and a fine one), I'd look for a 20" barrel or longer. I wouldn't want the Ruger Gunsite.
If you can still find one (even used), the Tikka T3 Scout CTR is just about perfect.