Lots of misinformation here!
What exactly is it you're trying to accomplish with weight training? Bigger? Quicker? Stronger? Fitter?
IMO you have a pretty packed schedule with training and there's no substiture for technique. If you're serious about using weights to improve your MMA, you'd be best off starting with the 3 main lifts - Deadlift, Squat and Bench Press. These are compound lifts that work your entire body and will make you stronger and quicker. Also supplement your lifting program with some conditioning also (You might already do this at MMA). All the muscles in the world won't do you any good if you gas in the first round.
Aim to lift 2-3 times a week and watch your nutrition and you'll see improvements. If you want a good program google starting strength, it's generally accepted as one of the best programs for building lean and useful muscle.