Both of those teams are very good, but you should play Feng/Jin if you want to play the 2nd one, Feng is best as a point character and one of the best Korean players plays that team. Look up TTT2 Hao on youtube. Also look up Aris Feng tutorial it's really good and covers basically everything you would need.
http://www.avoidingthepuddle.com/ne...w-to-play-feng-5-part-character-tutorial.html
As far as backdash cancelling if you just want to play the game casually and aren't planning on using back sway characters. Just do bb, qcb, b, qcb, b~ to backdash. It's very easy and only slightly worse than the proper way. If you want to learn the proper way turn on input display and make sure your inputs are clean, but it's pretty hard. I started tekken with TTT2 and it took me about a month of practice to get it down well.