Moving to Guangzhou

Hello everyone!

In one month (end of August) I'm moving to Guangzhou, China to teach English. I just signed up with Chinesepod. I know that city speaks Cantonese, so I'm hoping I'm making the right choice my choosing to learn Mandarin seeing that it is the official language of China. Any thoughts on that? Should I focus on Cantonese instead?

Also, any fluent Chinese speakers want to get together and help me practice would be most welcome!
email: theomar3@gmail.com

Take care,
Omar