  We combine recent simulation work on the SFR--[C II] correlation at high
redshift with empirical modeling of the galaxy--halo connection (via
UniverseMachine) to forecast [C II] auto power spectra from $z\sim4$ to
$z\sim8$. We compare these to sensitivities realistically expected from various
instruments expected to come on-line in the next decade. If the predictions of
our model are correct, [C II] should be detectable up to $z\sim6$ in this
generation of surveys, but detecting [C II] past the end of reionization will
require a generational leap in line-intensity survey capabilities.
