“green house” with pots this time. Any suggestions?<<<
Yes, make it a solar greenhouse and attach it to the house.
If it must be free standing then the minimum size is about 9x12 foot with a tall/peaked roof, or the greenhouse will heat and cool too quickly.
Sunlight and water and fun, it is easier to grow in a greenhouse, except for some plants, such as squash and cukes the will require your help to fertilize the flowers, so they will form fruit.
Many of the others will self pollinate themselves, if you give them a shake or two each day.
For solar they say a south exposure is best, but any will work, with west being the hotest.
I like my greenhouses full length of the mobile, open the door and walk in, open doors and windows into it and get the air to flowing, it makes the cooler work better and you will get a lot of heat from the greenhouse even with snow on the ground.
I used 55 gallon barrels for passive heat storage, fill them with water, it heats in the sun and gives off the heat at night, on top of the barrels is a good spot for small pots and starting seeds.
Put in beds if you can, you should make the roof strong enough for hanging pots and I use 2 loops of dog chains and hooks to hang a 12 inch board over the beds, to set more pots on.
Tomatoes [Cherry] will grow through the roof and bear for 2 or more years. Bell Peppers will grow for years, and look like a tree, if you prune it to do so and will then be able to grow in the middle of the bed and not shade the other plants.
Good compost and water and you are in business.
Look at leaf lettuce and oriental greens, yard long beans and onions, mustard family.
Corn will not do well, as it needs lots of breeze to pollinate itself.
All the herbs and you should see the roses, they will love it.
Where are you located? Snow?
What did you have in mind?