Ok. Here are a few of my suggestions.
-If all you plan on shooting is 100-300yd, I would stick with .223. It's much cheaper to shoot, and you'll get the same effect. You're wasting money on .308 if that's all the distance you plan on shooting, unless you're just buying it for the cool factor.
-A bipod is it? I'd buy a Savage > Remmy if I was planning on keeping the internals stock. The accutrigger shits all over the X-Mark Pro trigger.
-If you don't have any experience, I definitely wouldn't buy a .308 to start out with. You're throwing away money. Hell, I wouldn't even start out with a .223. Nobody ever listens to me when I say this, but I'd start out with a rimfire to get the basics down. It's cheaper, and you can spend all day at the range practicing. Granted, it doesn't have the 'wow' factor, but you'll learn more.