Question for expirenced nomad faction players

[Parallel Pain]

In my Saka campaign I have "regiments" of 3 riders and 1 armoredHA commanded by one family member. These regiments of all cavalry dot the map. 1 regiment is used to take out any rebel that appear. 2 is an army capable of taken on almost all AI armies, and when absolutely necessary I throw 4 together.

Saves money and saves time (all cavalry).
Also in early gain spys are a must. They warn you what attack's coming where so you can shift forces to match, allowing you to cover a wide front with minimum troops. I covered 4 border province with two regiments at my most outstretched times.