Courgette plant estimates

Tricky one this.  From last year's experience, and what all the books say, 2 or maybe 3 courgette plants is more than enough for anyone.  Last year I had 3 and, more courgettes than I knew what to do with.

This year I planted 4 and, guess what, the slugs ate them all.  I planted 1 more and it seemed to survive . . . just.  So, I planted 10 more seeds and and then moved the young plants outside, scattered around a bit to fool the slugs.  

They seem to have all survived!  If these 10, and the original one that managed to get through the onslaught, all produce like last year's, I will probably need to negotiate a deal to supply Sainsburys as I am going to have a lot of spare courgettes in a month or so.  

Alternatively it's courgettes for breakfast, dinner and tea.