My main is a khajit stamblade...my favorite class/race for sure.

Gear: I personally like to wear one craft set and one drop set for max flexibility. I use Hundings as a base, and make one of everything in it. This way I can carry a couple of drop sets and switch out depending. Like I have five marksman for when my friend wants to pvp bow gank...I also have morag tong...briar hearts...a few others.

For your craft set, Hundings provides more bang for your buck than most anything. The 300 weapon damage applies to every hit you make, so it's one of the best buffs in the game. I like morkuldin, though. It's funny. You have to thread and get in lots of light/heavy attacks, but if you play this way the sword will procs often and it does decent damage. Sometimes I pvp in my morkuldin just for fun. I defend from walls and light bow attack until the sword goes down and annoys everyone. I kinda want to some day try a morkuldin wall Zerg...like five morkuldins on one attack group, lol.

For a drop set, vipers sting is currently favored. It's a good set. As a khajit stamblade, however, I will admit that I love my briarhearts. It procs all the time, and gives massive damage and health back...very good. The jewelry is a pain to get. Plan to either pay big gold, or run 250+ dailies, or some combo. A third set is Archers Mind, but it's NOT a bow set. It boosts all crit damage and then boosts sneak attacks even more...very deadly for a pvp nightblade.

Skills/ideas: You say you want the 2h as your attack bar, and right now bow setups are very viable for a pvp retreat bar. A viable sneak pvp attack style here would be to buff w forward momentum/rally in sneak (20% more damage). If you can spare a slot on your bow bar, consider magelight. Why? Might of the guild gives the next attack 20% more damage.

So, from sneak do rally, magelight, then launch a snipe or two. It will hit like a truck. I've gotten 15k damage from this in Pvp, and that will ruin most anyone's day. If they're on a mount...ouch. Flip to your 2h while the snipe is airborne and ambush, execute, execute, execute.

This is why people hate nightblades.