Firstly-- welcome to Flyertalk. Glad you posted here, but just an FYI, you seem to have the same topic posted twice. Maybe alert a moderator using the little exclamation point button and ask to have it removed.
You could surely benefit from the SW card, also an Ink or Sapphire card that earns UR points and offers a host of domestic (including SW) or international travel partners. Your spend is not high, so start slowly with a couple of well thought out cards, and go from there. You can get more cards as quickly as 90ish days out, so don't worry too much about "missing out".
Keep reading here, you will learn a lot.