I just went through the same process - best bang for the buck and ease of use.
I decided on
Terminus Zeus - really wanted a quick change and not have to go through a smith to get a barrel cut, and also researched the quick change around POI shift and talked with Joel and he hasn't heard any reports of any issues with the Vector or Zeus. So I ordered a .308, 6GT barrel. For you, take your pick 6.5.
Barrel - Went through StraightJacket armory - They have a sale going on right now, and I've heard great things from the barrels they cut. Barrel length, I've heard people who like to go shorter, and people who go longer. Most people go 24-26" for 6.5cm it looks like.
Trigger - I've been really digging 2-stage triggers these past few months, went with the Huber 2-stage @ 1.5lbs. You can find them on the PX for $200, and Huber will take care of you if you have any issues/adjustments you need done.
All my chassis are MDT ACC. It's heavy though. A balanced rifle, at the lightest configuration will be around 17lbs. With the normal steel butt-end and a 40oz scope, my balanced rifle will be about 20lbs.