Real runner feedback on course feel, crowd support, aid stations, and logistics (parking, hotels, restaurants).
In 2014, missing aid station at a critical point. Another aid station ran out of water. No hot food at the end as promised. Just junk food. In 2015, race was postponed to a date pulled out of thin air (not originally offered as a possible date) and that conflicted with a better race nearby (HAT). So a lot of people gave up on Seneca and did HAT which they had already registered for. RD lacks communication skills. Race page is missing critical information or is too vague to be useful; Comments/questions posted to Facebook page are censored.
Wait until the last possible moment to register. It didn't fill up in 2015 so there's no reason to register early. Due to weather and possibility of cancellation, it only makes sense to wait.