I'd go for the SLX Combo, $140 is a steal. The rod is pretty sensitive and strong, you could throw just about anything on it. It sounds like you're just starting out with a baitcaster, so start with mono, and once you can cast well without many backlashes( and you can get a backlash out), go to Seaguar fluorocarbon. I'd use 12-15 pound depending on where your fishing, and what lure you use the most with this combo. Read the manual on the SLX reel, and you won't backlash that often. The brakes are quite good on the SLX.
Not the biggest fan of kastking. I've tried the Tatula and it is a good reel.