Really interesting mix of answers- thank you. We'd be out 730-430. Doggy daycare all day is way too expensive but an hours walk a day is affordable.
We're looking at labs/golden retrievers if that makes a difference.
If you're going for an older rescue lab it may be ok assuming you or your dh plan to take some time off to make sure it settles in properly and then to build up time left alone a little to make sure it's not getting stressed and anxious. You may find many shelters wouldn't let you adopt if they know how long you plan to leave the dog alone daily.
If you're getting a puppy, I think you may be underestimating how much time it can take to toilet train and then build up to leaving it alone. My lab was very quick and basically toilet trained herself, she's two and a half and has never pissed or shit inside but that's also been helped by someone being around and watching for the signs to take her outside.
Puppies, esp labs can be very demanding of attention.
An older lab may be able to cope with being alone that long, a puppy? I doubt it. Even if you took a few weeks maybe months off between you and your husband for toilet training and building up time the pup is left alone, I'd be suprised if you don't have problems.
If you can't afford daycare are you going to be able to afford vets bills? Even with insurance, it's not always worth claiming for general illness stuff, If I checked me receipts I've probably pulled out at least a grand on various vets trips, and if you're buying a puppy they're also several hundred pounds if you're going to source an ethical breeder and not a backyard one.