Here is my Picts Army for impetus, I hope you like it.
Core units are great units of light infantry with long spears
feary enemies for calary, with great mobility.
If you want to use pits, you must use woods in the main of the table, so they can muve safe in theme.
Light cavalry with javels are necessary to protect your flanks. If you put your general in one of theme, he can easly goes where he needs.