Japanese Maples: Name this maple? Care recommendations?, 2 by Plants4myPots

Plants4myPots wrote:
I'm sorry the pics are sideways. The website doesn't seem to like the images I'm uploading from this mobile device.
I have this healthier-than-when-I-bought-it maple tree, that I'm not sure how to care for properly. It seems too tall already to be a true bonsai, but I'd like to keep it in a pot for as long as possible. Can anyone identify what kind it is, and have any suggestions on how I to cultivate it?
It was about 2 feet tall with hardly any leaves in about three inches of common dirt when I bought it at a yard sale. In like, two months it shot up to about 4 feet tall after repotting in about 9 inches of good potting mix.
I'm in zone 9b. Looking forward to naming this maple!