I think C- is the right call. I don't think you're going to be able to qualify for any jobs that are terribly interesting, because this is your only good season in that four-year window.
I don't think you can really you can try to forecast whether you should leave or stay until you see what jobs are at there that you can qualify for. It sounds pretty clear that you want to get out of Ark-LR, so with that in mind, I'd say if there's a job that looks good to you, go for it. If not, I'd reload with a couple strong recruits, combine those with the six seniors you'll have and make another NT, which will open up more jobs.