What makes you want to go for SA?
I don't really see much more than an Admin in you at this moment. You say you most likely won't be there for the meetings. This is a huge downside, you cannot afford to let your voice unnoticed in the meeting as certain things are crucial.

I feel like I can do more for the community as an SA, just because I can't go to meetings doesn't mean I don't like interacting with new and old staff. I am able to train new staff members and help out in situations where SA's are needed. I am almost always available for things like that. Meetings just happen to be during a period of time where I cannot attend the majority of the time.