C&C Medieval is an excellent rendition of CCA. In fact I use the "Inspired Leadership Actions" repurposed for Hoplite Warfare with that 'Hoplomachia' feel
Works a treat.
I also just finished a Justinian campaign (GMT's GBOH - Justinian) using CCM playing out the battles. I worked up an interface that made for an excellent boardgame game to miniatures game conversion...it worked very well.
..in a hotly contested campaign Justinian and his generals Belisarius and Narses got the job done...just!...on the last battle of the last campaign move...epic!
I'd recommend CCM...cavalry heavy focus with armour differences that have a nice historical feel to them.
File attached FYI