The man next to us was actually very helpful, he said he pretty much does organic except for slugs and then just does what eh has to and I found that really works.
We had toatlly unexpected overwhelming success with Purple sprouting, which is HUGE and catches everyone's eye. As a result we get lots of tips and help and lots of swaps. I would also highly recommend beans on your easy to grow list above.
Since then we've taken another half plot, in much poorer condition, but hidden at one corner! We both work so time is critical, for these we spend about 2hours on a Sat and maybe another hour on a Sunday. Watering was the time consuming bit last year and I did that daily so whatever you take on consider watering time (and how far away the tap is!).
I would never be without the pleasure, I'm completely addicted at all times of the year now!
