It's worth considering what your particular customers want. I make Photoshop plugins, and since the CC subscription came in, I've heard of a lot of customers jumping ship to one-off purchase products, like Affinity Photo and Paint Shop Pro. But some other customers are happy with it.

Also, while Creative Cloud is paid monthly, individual plans have a minimum term of 12 months. If you cancel, you have to pay out 50% of the contract term (unless you prepaid for the year, in which case there are no refunds).

http://www.adobe.com/legal/subscription-terms.html