Is 10 weeks old too young for a collar? Also how can I make this kitten social for later in life?

I have 2 other cats and when people come over they hide so after rescuing a new 10 week old kitten I'd really like to make sure it likes strangers when it's older. About the collar, it's kinda big and he can get it into his mouth, then freaks out. Is there kitten collars on the market? Is it ok to keep the collar on him?