We stayed last week in a similar class room on Legend (another Spirit class ship). It was perfectly satisfactory room. Larger balconey lets you stretch your feet out a bit , does not take away from room size. Based on you room number you should be on level 5 virtually midship. What could be bad about that?
We had an extended on Spirit last October. If you want a visual, go to my photo gallery that was uploaded in October of 2002 called "Spirit to Mexico". I sopecifically took a pic of the extended balcony.