OP, you sound lovely, and thoughtful, and some dog will be lucky to join your family.
I just want to add a few things.
MN and especially the Doghouse are very fierce wrt to acquiring a pet! Posters are largely anti-pedigree puppy, pro-Staffie/ greyhound/ lurcher rescue. Woe betide the person who acquires a puppy without its full family tree, bristling with health certs, having waited a decade a year for the litter and lined up a dogwalker, a trainer, a behaviourist and ideally moved to working from home so as never to be out of bark's reach. Posters are advised to adopt from a shelter but if they are unlucky enough to choose or have foisted on them a dog with unsuitable characteristics, they will also be heavily critiqued on this forum. In other words, it seems like if you buy a puppy, no amount of research is enough, but if you take on a rescue, no amount of hardship is excessive.
I'm not one of the anti-pedigree-at-all-costs people. I have an Irish setter because I wanted a good looking, gentle, non-barky and athletic medium to large dog, and I wanted to train from scratch. I have exactly what I wanted. Just be aware that breeders, irrespective of their credentials, love their breed, won't hear a word against it, are often not especially well informed and have a huge interest in persuading you to hand over a large amount of money for a dog. They will never, ever say "Ah yes, that's old Hatfield IV over there, bit of an old bastard really and all of his offspring have dubious temperaments too... yes, this is Crumpled Dinah, never got her eyes checked but hey, here's her hip scores, bet you won't notice the omission."
At the end of the day, we all want a dog to love who loves us, fits into our household, gets on with the other animals it encounters, is mentally and physically healthy and has a nice active sound life for twelve or fifteen years. There are lots of ways to achieve that. Buying a bulldog is definitely not one of them! But there are more breeds than you realise and so, so many cracking dogs of no breed at all.