For DD use and occasional spirited driving, the stock sport brakes are fine. Fluid is a consumable, go ahead and swap that out. Lines only get you better pedal feel, so that's a personal call. For normal driving, the stock pads are very good. When you upgrade to more track-focused pads, often times they are not as good at regular driving. There's no magic bullet with pads. The ones that will take the best beating often don't stop worth a damn until you get some heat in them. There is a noticeable performance difference with two piece rotors, but that's mostly just from reducing unsprung weight.
Also, brakes don't stop the car. Tires stop the car. If you want shorter stopping distances, get stickier rubber.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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