What an adorable puppy!!!
My (rescue) beagle has been GREAT with our now 8-month-old baby since we brought him home from the hospital. She will give us the side eye when we aren't paying her enough attention because of the baby, but has never once shown any sign of aggression towards him.
Make sure you get a trash can that latches. Beagles will get into anything remotely edible! I freaked out once because I left a gift bag with spices in it on the coffee table - she broke into it and ate some. Also once ate 3 months' worth of heartguard medicine

fortunately all was well, but you can never be too careful!