What's your commute at JBA and what would it be at SWA? What's your relative seniority at JBA? I assume you haven't upgraded yet.
If you're only two years in then it makes sense IF you take a snapshot of the industry right now. Just be aware that your quality of work will probably decrease (assuming that you're on the Airbus now). It won't be nearly as pleasant of a front office and the quality of flying will be a little worse.
That said the money can be great if you play the system BUT part of doing that successfully means living in base. Can you give us more details?