You would need LK 6 for bonus ranged damage. Which [LK] would be a good thing to have for a combat character. Critical fails with big guns...ehm. Yeah, someone tried to minigun me before and had his weapon destroyed, and I wasn't even jinxed.Points from EN put to AG are fitting for a sneaky character. 6 is good enough.What could be wrong is the very concept of a big gun sneaker. Big guns are heavy, and the ammo is heavy as well. Carried weight gives you a malus for sneaking...
i would pick 'bonus ranged damage' instead of 'bonus rate of fire' - you still wont be able to burst twice during a round with brof, where as ranged damage boosts damage alot when it comes to bursts.
What about jet? Wouldnt it give me 2ap? Thats enought for 2x burst. Ive never been addicted before so I have no idea how addiction system works, but ive heard that jet addiction is pretty rough.