I fermented in the mid 60's also. I had nice activity for 4-5 days and then it settled down. I left it in primary for a total of 3 weeks before racking. It came out nice and clean tasting.
I let mine go for 13 days at 65-70 degrees in primary before racking to secondary. It tasted great then which is why I'm in the process of making it again without bourbon/oak.