Will give you my 2 cents...and I own a Moto Ti 29er frameset which has been outstanding...a great value...but didn't buy the whole bike.
A bike is much more than the groupset. New 6800 is excellent and a cost effective alternative to DA9000. I personally wouldn't buy that bike.
I am sure its OK...but for $3500 you can get something like a Tarmac or Roubaix with 6800. It will have better resale and likely will be a better frame...perhaps much better. The frame is the core of every bike of course. And then there is the wheelset. Incidentals you will end up changing anyway...like handlebar, saddle,s stem etc. So for $3K I personally wouldn't buy that bike with more top brands on the market.
I will say I believe the Moto Ti 29er still to be one of the best values on the market.
If you have $3K to spend on a bike, you will be just fine. Go ride some bikes and find the geometry you like first off...racey versus endurance.