Getting a bonded couple from a shelter/rescue is really a great choice. You don’t have to worry about bonding, which can be quite an ordeal. Having a bonded couple makes it a bit less demanding on yourself, since the bunny will always have company even when you are at work or in school. Rabbits are very social animals.
That said, two rabbits cost more than one, so it’s double the vet bills and double the cost of food (it’s mainly fresh greens that may be expensive, depending on where you live.)
I totally agree that personality is way more important than breed. That rabbits live longer and heathier lives indoors is absolutely true. The outside has so many dangers for rabbits, predators, vermin, insects, intestinal parasites, hot and cold weather etc. But if you do decide to do outdoor housing, I would urge you to get a bonded couple, a single rabbit will be lonely and bored if it lives outside, even if you spend some time with it every day.
I have a German Shepherd dog and 2 house-bunnies. It has worked out fine. My dog isn’t really interested in the buns (but she is interested in their food
).