First, Congrats on your first sale!! Cute as can be romper..
Quick critique, The zippers and snaps, buttons, jewels and other embellishments will need testing before you can sell the outfits. Zippers need lead in paint, and lead content for the tabs and stops. You need to at the very least have testing certificates from your supply vendors. I don't know if you are registered at Safer Portal, which may help you on some things.
You also need FTC labels on your garments. The FTC labels cover Content and Care. I buy them in bulk from NWTag.com. Their woven labels are quite inexpensive. I also use their woven size labels.
Your CPSIA labels are different. Those you can have printed or order custom woven ones. Currently I print my own on my ink jet printer. The CMYK ink is exempt from testing.
It is very doubtful that any label maker will make all different labels for you. My best advice is to buy a couple of the most common. Like 100% cotton, machine wash cold, hang to dry.