Hi! I have agonized over leaving my babies too! I don't know where you live or if it is an option for you but here in NY I have found a doggie daycare that I take them to a few times a week. It isn't cheap but it gets them socialized and they play all day. When I do leave them home I have 2 excercise pens connected and inside are their crates (open), blankets, water, and a pee pad. But I always come home for lunch if they are here, do you have that option? It is nice that you have your family to help, you are lucky that way
good luck and keep us updated.