Also consider getting some low-spend cards. Not everything requires 4-5K in 3 months. A couple of examples that spring to mind:
Southwest 60,000 points for a 2K spend in 3 months.
Aviator Red AA card. 50,000 points after your first spend
IHG often has bonus of 60,000 to 80,000 points for 1K spend in 3 months