Yes, a mix of Mounted Sergeants and Mounted Yeomen would cover those models nicely. Unfortunately, I don't think you can upgrade them appropriately and still hit 24pts on the nose.
Mounted Sergeants with bows @5pts
Expert Mounted Yeomen @6pts
I think you would probably be best off with 2 units of skirmishing horse archers @6pts each, and then 3 units of Mounted Sergeants using the lance and sword-armed models @4pts each. Of course, that's still 3 boxes of 12, with 6 spare models to do something else with. I used Bolt Action plastics to turn mine into pulp extras from The Good, the Bad & the Weird.