Congrats on your 300WSM! I have one myself, although it's a Browning. Unless you're a big fan of downright EVIL RECOIL, I'd advise you to replace that factory synthetic stock with a quality aftermarket. Not only will you add some weight to the gun, taming some of that recoil, but a new bedding job is a must if your want the best accuracy from you're rifle. [The factory synthetic stocks seem to be bedded with hot glue]. For instance, my 300WSM Browning Abolt hunter shot a lousy 2"+ group with factory 150BSTs (which are reportedly the worst performing ammo - maybe, maybe not - read on). After replacing my factory wood stock with a laminated thumbhole, rebedding the action, and hand-lapping the barrel, my new and improved Abolt shoots .625" groups with FACTORY 150BSTs, and .750" groups with factory 180FS ammo. As for optics, that's your decision. However, I would advise on using at least double dove-tail mounts and rings. As for me, I topped mine off with Leupy VXIII 3.5-10X50 (purchased from Natchez). I'll be working up a load with the new Barnes 168gr XLCs and CT 165gr FSs in the next few weeks and will post the results. Enjoy!