He looks adorable in your profile!
Can I give you some advice, and I hope you don't take it as a slam or anything, or doom and gloom as your pup is probably great

You said yourself you may have missed a few questions for a breeder as a first time buyer. A big question you most likely missed here is HD ratings on your pup's ancestry. There is a LOT of "no info on hips" in this pedigree. It is probably fine, but do yourself a HUGE favor and get him something like Petplan insurance asap. There are brief waiting periods for things but in a few weeks your pup will be fully covered for even things like HD treatment.
To give you an idea, I pay 70 per month for the best plan option for my dog. It covers everything except for routine check ups and vaxes. It covers HD treatment including total hip replacement. I have a 3k per year deductible, everything else beyond that is covered with no cap. Also covers $$ of dog in the event of his death due to illness or accident. Also covers a behaviorist if recommended by a vet.
They absolutely have lower priced plans, they may have a higher deductible, a cap on what they will pay for year, or both. I also have my rescue little pit covered. In any event it is good to have. Some people say to me save the 70 per month in a vet fund..in my opinion the 840 a year is worth it. I know my max vet bill for illness or accident, per year, will 3,840 bucks. And if no emergencies? Great. 840 bucks total per year. I know someone who recently had a bone tumor come up in a perfectly healthy well bred dog. They are well past 10k within weeks...that would be over 10 years of saving the "70 per month" on insurance...
Anyway, without (it appears) hip dysplasia testing being thorough in your new pups lines, I would highly recommend the investment of insurance. It can't hurt and it coveres all of the other what ifs.
Good luck with your pup, he is adorable!