On the the 2 cities thats in the mountains north of byzantion and pella, build type 4 goverments and build to lvl 5 local MIC
that will give u to numerous units suchas triballi warriors, thracian elite falxmon?, etc etc all elite infantry units that can bassically make an imitation legion along with thorikita,theuropheia and peltats

side note
how do u enable thorikita for makedonia? i never found out how to