I used to work at a doggy daycare, and you seriously have to be careful with which one you choose, if you do go that direction. The one I worked at was privately owned, and separated dogs by size and play style. We had a few ‘pair dogs’, which were dogs that needed to come to daycare, but they were too aggressive to be in a group. They had a few pals that we would rotate for them to play with for 15 minute intervals throughout the day.
I don’t think it’ll go well leaving your 5 m/o pup alone for that long. Mine is now 9 m/o and I still won’t leave him alone for 10 hrs. If I know I’ll be in the field all day for work, I usually have a friend whose dog adores mine bring him over to her house to play, or at least ask a friend to let him out in the middle of the day for me. If I had the option of doggy daycare where I live he’d 100% be there every day I was in the field for work, or needed to be gone for an extended period of time. He is insanely destructive when he’s left alone and bored.