Gladly! :thumbsup:
Ballistic Plate Vests have M/B/E/X ratings of 4/6/5/4 and cover the torso (only). At the TW scale, only torso armor counts for Armor Divisor, and since the ratings add up to 19 (which round to 2 when divided by 10), 2 is the Armor Divisor (AToW Companion, page 171 refers). Also note that while the full suit of Ballistic Plate is encumbering, the vest is not. It seems the Kuritas knew what they were doing with their body armor after all... ^-^
Weapon-wise, I'm relying on Shrapnel here. I've posted the full range of weapons from the various issues (linked in my sig block for the curious). As I noted, the Marik Sunraker Laser Rifle is a prime choice. It has a shorter range than the Steiner DWS L5L Laser Sniper Rifle, but it's more efficient (only 10 power points per shot vice the L5L's 15). Because it's being used as a Primary Weapon, its range doesn't actually matter, so the energy efficiency wins (Tech Manual, page 152).
For Secondary Weapons (which determine the squad/platoon range, same TM ref as above), there's really no substitute for the Barton Sniper Rifle. The Anti-Armor ammo is the way to go (0.59 damage standard), and if you can afford the mod for it to take a larger magazine (x3 cost), you can get a 0.74 damage weapon at 7/14/21 range (Secondary Weapons aren't limited by the 0.60 damage cap). Bartons are 1E crew though, so you take a penalty at 0-hex range (the table at the bottom of Tech Manual page 149), though no mobility penalty (because Sniper Rifles aren't Support Weapons... Tech Manual page 215 refers).
Let me know if you have any questions! :)