Leopard gecko breeding?

So I have a have a juvenile leopard gecko who is growing and has a nice fat healthy tail and body. When he gets older we are thinking of breeding him. He is living in a 10 gallon cage now which he is doing great in. I am eventually going to move him up to a 25-30 gallon tank when he is full grown. So what I am hopefully going to do I have him in a cage by himself and his umm wife in suppose in a bigger tank with the babies when they are full grown and getting along (If they don't get along they will be separate) also she will be with all girls who get along. So I was wondering if that is ok if I missed anything and suggestions. I have been doing a ton of research and know that this a big responsibility. Where should I get his the female? Is online safe? Should I get her now or when the are both older? Ok thank you for any and all help!