You could probably leave the pot outside for the winter if you bury the pot in leaves. I live in zone 5 and this approach has worked for me in the past (we'll see about -20 degrees.)

Unfortunately, you probably wouldn't get much fruit from raspberries in a single pot. I don't know anything about that variety. But a pot would have room for a limited number of canes. However, a small harvest might be better than none.

Would you consider another type of fruit? I currently grow blueberries, blackberries, and sweet cherries in pots. I think any of those would give you a larger yield.

Here's some info:
Fruit gardeners with limited space and an eye for beauty will love the the BrazelBerries® They are new dwarf blueberries and raspberries bred to thrive in containers. True edible ornamentals, they are beautiful in all seasons and produce lots of delicious fruit in small spaces. They are perfect for folks with limited space who want to grow their own healthy food on a balcony or patio. They will also thrive planted in the ground in your yard. Raintree for many years has specialized in edible plants for the different niches in your yard including many varieties that will grow well in pots.