I ride a BFe which apparently is exactly the same geometry. I use 150mm Revelation U Turns. The only time I wind them down to 120mm is for very difficult, technical sections on climbs, after which, I wind the mm back up for the rest of the climb.
But at trail centres for example, the fork stays permanently at 150mm. I love the feel of the bike with the longer fork – 100-120mm feels like I’m teetering over the front of the bike all the time. I can understand that for covering loads of miles on Tarmac or flat trails that a 100mm bike might make sense, but I just don’t find that geometry much fun and much prefer the slacker angles that the bigger fork gives. Makes me much more inclined to hop and jump off obstacles in the trail.