Have you done a soil test yet? If not, I'd start there. You can get a head start on amendments this fall. You'll have more than enough to do in the spring.

None of the vegetables you listed need to be refrigerated except possibly the beans. A cooler will take care of that. If you pick early in the morning and they sell quickly you'll be ok.

Good luck!

sounds like a great mix. Remember to stager your planting so you have produce for a longer season.
also look a the thread about micro nursery in this forum. the same things apply
Blessings!

I wish you luck in selling your produce. Two things struck me while reading this post and another. Why a discount store? Will customers be expecting discounted produce?
The other is in your choice of veggies. I think they all are good types to sell, but have found that in cooler areas you may not have great production from warm weather crops. I'm in zone 4-5 (now fully 5 with ??? global warming). My land is facing south so I do pretty good with these crops. However, a friend who has a north facing slope has decided that he should focus on cool weather crops because the land just doesn't warm up as much and he has a much shorter season.
These are not to discourage you, but to give you a couple things to think about.
Again, good luck.
Ann

Your choices have several space users and would soon fill up 80x80 feet If I had my choice, I'd drop watermelons (per anniew's comments) and probably most muskmelons. These are rangy and more inclined to have cultural difficulties if not familiar with them. Also, they are in the ground longer before any monetary return.

Perhaps something like snap peas for the earliest planting and harvest would get you started. These can be replaced with a bean or other quick crop when finished.