A single Shape Layer with three Repeaters should give you all the squares for all the days across those four months that you’ve shown. Start with a single square. Then apply a Repeater and set it to repeat seven times across. Then add another Repeater and set it to repeat down, six time. Then add the last Repeater and set it to repeat four times across.
For the day selectors, it really depends how many you need at any one time.
For speed considerations, you can speed things up by setting the scale of day selectors to zero instead of setting opacity to zero. If scale is 100% and opacity is zero, AE will still have to draw the pixels at 100% scale and then reduce its opacity to zero. This of course wastes time.
HTH
RoRK
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