40x20 is a lot of space to jump into for a first time gardener.
Sorry, I don't agree with this. A 40 x 20 garden is a good size to start with in my opinion. You can do it. This gives you enough space to really make a worthwhile contribution to the food budget.
Yes, you can plant strawberries in one corner of that area. As noted though they do send out runners in all directions. Next year you will have 3 times the plants.
[url=https://donce.lofthouse.com/jamaica/GARDEN.pdf]Check This Out[/url]
The link is for a paper I wrote for this area in Utah. You can adjust your planting times for your area, but this will tell you which are the early crops.
Gardening at 5000 feet elevation, zone 4/5 Northern Utah, Frost free from May 25 to September 8 +/-