Nearing end of warranty - what to change?

I'm nearing the end (almost 80,000kms / 49,700 miles) and wonder what do I need to change besides the oil/oil filter? So far, the dealer has recommended the following:
-spark plugs (I think that I need this)
-alignment (not sure)
-injector flush (I only use premium gas: is this even necessary despite my high mileage?)
-brakes (discs+pads for all 4) (I have squealing brakes, probably need this, but discs+pads or just pads? I assume that it must be for all 4 wheels.)

Do you agree with the above? Are there items that should be / not be included? I have a 35i w/ DCT if useful. I've tried to read the lifetime maintenance schedule for our cars and the only thing that popped out are the spark plugs as a MUST CHANGE. I'm not sure about the various other fluids in the car, could you please give me some advice on what MUST be done? I plan on keeping this car for a long time. Thx in advance.

They won't do brake rotors unless they are below a certain threshold.

My free maint ends in April and I'm trying to get the rotors worn below the line by then. Sure it means more squealing now but better off in the long run I hope.