Hi kn. Whereabouts are you as that will govern what you can grow outside? Also soil type, local climate eg frost pockets, high winds etc. I am in Scotland and have slowly learned which varieties of fruit and veg do well here and which I don't bother growing, or which will only crop if grown inside my polytunnel.
You could certainly fit in a row of raspberry canes which will provide enough fruit for eating fresh, freezing and to make some jam, and perhaps some brambles (blackberries) trained on a fence.
Your rows are the same length as mine - 25'. This means that a single row of crops such as purple sprouting broccoli will be too much for two, but I plant half with psb and the rest with kale or brusssels sprouts, etc, sometimes two rows. Similarly with roots, I would grow half the row with carrots and the rest with beetroot, but a whole row with parsnips. For onions, garlic and shallots, I make a flat bed 4' wide and the length of a row and that provides enough of those for summer use and winter storage. Lettuce and other salad crops can be fitted in wherever there is a space. I grow plenty of potatoes each year, because they are so tasty fresh from the ground, I use no chemicals when growing them, and the varieties available for home growing are far more varied than you can buy, but with a limited size of veg patch you might want to grow a single row of salad potatoes and maybe a row of a variety called Mayan Gold - this is a specialist variety which makes THE MOST delicious roast potatoes ever
It is difficult to suggest varieties without knowing where you are. Have a look through some veg catalogues, or online and get an idea of what you might like to grow then we can pass on any knowledge we have on those varieties.