After mulling things over I went for a ratio of 1:33. This gives:
1. Horse 9figs - ~300men (5 troops of 60 men)
2. Foot 18figs - ~600men (10 cys of 60 men)
This come close to actual average unit sizes I worked out from various sources. I tried out how the regiments look with the new sizes and they are ok. Mind you anything smaller than 18 figures for foot regiments and the stand of pikes effect is lost.
