Please correct this

Hi.

He has worked very hard professionally during the past decade or so. His professional experience includes working as an administrator at a large hospital at xxx, Korea and working as a clerk for XXX Company, also in Korea. He has two boys and, in addition to that, (should I take out the commas?) has two dogs. Right now, he works as a teacher doing what likes to do: teaching and motivating children to study hard.

Question on the writing: Is a comma before and after the phrase "in addition to that" correct? I think we can do away with comma and that will be OK but having just one comma after the word "that" in "in addition to that" is not OK.

He wanted a new shirt and, in addition to that, he wanted a new bike.