Followup: The cider has come and gone and turned out pretty nice. I back sweetened it with some local apple juice and cut it with ~ a pint of water.
Anyway, the whole nitro thing was interesting: The first pull of a session would give me an awesome cascade and that nitro head, the second would not. I dunno if excess pressure was building up in the head space or what. Overall though I liked it on nitro, seems to have smoothed it out a bit and when the cascade did work it was delightful.