Surprise! I am NOT going to tell you about the effects you should use. Instead, I will write about something much more fundamental and important.
You don't realize it, but you will need to work on the subject and the background separately. There are too many places in that shot where the luminance vales of subject & background are similar. If you don't do it, your work will come to a grinding halt.
This means you will need to remove the subject from the background. You can do it one of two ways.
First, you can re-shoot on a properly-lit green screen, which makes the process very easy and fast in AE.
Or you can do it the HARD way -- you can use the shot you have and separate the subject from the background using the Rotobrush tool. If you haven't used Rotobrush before, you MUST use a few Rotobrush tutorials from a reputable source. Rotobrush is NOT intuitive to use -- you need to learn how to us it properly. Depending on the length of the project, your investment in time doing it the hard way using Rotobrush will range from about 12 to 80 hours.
Go to sources like the Adobe Web site, the Pro Video Coalition, perhaps Videocopilot or here on the COW. If you just google "rotobrush tutorial", you have NO idea of the quality of the training you will get.
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA