Sorry about that, you guys! I didn't realize there was a schedule option (if it's not premium) until after the influx of AWESOME FANTASTICAL DEVIATIONS. I have one more to submit after this since I forgot it, but it's great, promise.
Anyways, it's summer now so I'll be submitting a lot more, hopefully! Look forward to it and thanks for your patience <3
It probably will be available for everyone eventually. They tend to give free users old perks of premium users at some point (besides a few exceptions), so maybe you'll be able to do the schedule thing some years from now.