Ha Ha. He is just protective of his little babes! Cute! HOWEVER...he does need to make sure he pays attention to his marriage. Just because he is a father does not mean he quit being a husband. :)
My advice is that you ask your girlfriends around that have kids of their own. Maybe you guys can do a date daycare swap. I think your hubby would feel more comfortable of it were an adult rather than a teenager. Also, where your kids are so young, I wouldn't necessarily recommend a teenager either as your first choice.
In respecting him, you should try this... find a babysitter / friend that will do this (without your hubby knowing). Tell your husband that you need to meet him somewhere. Then maybe you two can have a night out. This might backfire if he is only concerned about the kids though. So, I guess maybe you should work WITH HIM to find the right daycare person for the job. :)
Sorry...wishy washy answers, but I don't know your hubby.
Good luck!