I'm a recent upgrade on reserve in Chicago. You can count on a minimum of 11 days off. Initially, you will be on reserve. During reserve, you will either be assigned a trip, home reserve, or airport standby. You will know the day prior. Typically you will fly plenty on reserve, but will need a crashpad for at least the first few months.

I live in OKC. The commute to DFW and Chicago has been fine. Crashpad access in Chicago is much easier in my opinion.