@twistedpencil to answer your question, 160mm Pikes is pushing it on the AC 29 in my opinion. It lifts the BB a bit too high and changes the climbing position that bit more with a slacker ST and taller front, also shortening the ETT a touch more, 150mm feels good.
I have a friend running 160's and he wishes it was a touch lower in the BB. It's not loads but noticeable.
Coincidentally, I have a set of 150mm Pikes for sale from my Ion15. They can be changed to 160mm just by replacing the air spring, but I would suggest staying 150mm. It also keeps a good climbing position. Got a set of Enve wheels too:-)
I speak from experience as the production AC was based on my custom AC and I provided input to the production model, I then worked with Nicolai on the Ion15.