New plans for the new year coming

I think 5 courgettes may be over egging it a little unless you really really like them.  If you are doing a row or a bed for these and the squash, I would reduce the courgettes to 3 and grow more squash as you can store these and they are a lovely standby to go to over winter.

To avoid wasting ground and keep the plot full, I use module trays and sow beetroot (3 seeds per cell), spring onions (6 or so seeds per cell) and similar quick maturing crops like lettuce and salad leaves.  I do a tray of each every couple of weeks and plant them out whenever a space comes clear that I don't need for another crop straight away.  Don't thin - just plant the clump out about 30cm apart.  Works really well for me 

This is beets to give you an idea