I use IWC for all our small plots - and some of the larger ones too. It grows well and is a good mix.
How small the plot has as much to do with how much other food is around, and the location of the plot (eg. in a bedding compared to a pass through area).

Clovers are definitely best for a small plot. If it gets hammered too much - then you know that you need to expand it or try a time targeted plot like brassica. At least in a small plot its cheap enough to find out through trial and error.

FH