you would best call Kevin at advantec and confirm because I honestly dont know what they are going be, however the number i thought they were working towards was 6500. I dont think that is unreasonable based on if you bought a CR tunnel and stock bulkhead it would run you somwhere around 3700. Carbon Fiber setup is about half the weight so double the price (which it is not) is not crazy, I know how much the Ti chasis is, and its more. Cf should be stronger when done properly and it's repairability is much easier.
are you sure on the 6500? Thought i had heard closer to 10g for a full CF chassis. could be wrong though.