I use Dragon Stance for corner mixups, such as over head flip or dash cancel into b+312 or b+2,1 or b+2 or maybe even back dash to bait out the jumps and anti air...
As for your BnB's
#1: Use dragon stance 1 to pop him back up! and follow through with b+312
#2,3: start off with F+1,2... its easier and reliable and follow up with b+312
#4: you can use your xray to go through anything... and the range is really good... be careful though as the if you are too close you will whiff. You can always bully your way in with F+1,2 or b+31 or f+2 you have to adapt to the opponent since many mk competitors love to poke out. counter poking is one of lius great tool to utilize in your core gameplay.
#5:best follow up would be NJP Dragon Stance 1 b+312 f+2,4 into bicycle kick
Also Keep in mind whenever you fight character with a teleport or some sort of hang time on there jumps... you can use standing 1 to recover faster and follow up there bait.
Ex. Ermac jump in teleport, you do standing 1, by the time teleport comes around you can already block or duck.