My expected GPA when applying will be around 3.56 and my expected LSAT score will be around 165-167?
Also check out LSAC's admission profiles. They have grids for most schools that will give you a very good idea as to your chances.
Keep in mind, though, that until you have a real LSAT score everything is speculative. If you've been consistently scoring 165-167 on timed practice exams, that's good, but your actual LSAT may very well be lower (or higher). That said, if you actually end up with those numbers, I think you'd have a good shot at SMU.