Mate, not be harsh here but you have been given some good advice here and basically just ignored it....
Situps are not going to lose fat you need and get you that 6 pack, 95kg squats and 100kg deadlift is pretty poor to start with, and i honestly dont see what not eating carbs after 6 is going to do for you.
Diet and hard work ethic in the gym with heavy lifting is what will get you results, I personally beleive that if you have been eating those few cals for a period of time your metabolism is most likely a bit fucked, I know mine was, so you will have to slowly increase your cals, NOT STUPIDLY EATING EVERYTHING, but increase and start counting your cals you can gauge how many cals your consuming, lift HEAVY, i have recently changed from a body part per day to a Upper/Lower split and time will tell what results it yeilds but so far i am enjoying it.
just a couple of things to think about.