2017 aluminum owner, riding 30x18 with 120mm fork.  Great bike, but not the same as my rigid Surly (my favorite).  Can't help but wish for a rigid fork with a long enough A-C.  Do you think Niner's 490 mm fork would work well?  Perhaps 27.5+ rear and 29+ front to keep the HA similar?  Would be nice to have a carbon chameleon frame/fork combo.