Engines are easily tuneable with a remap and the dsg gearbox is great and best auto on the market. Make sure it's been serviced ras per serving intervals. If the gear changes aren't smooth or isn't engaging gears this can be caused by old gearbox oil at the very least.
Quattro is useful when loss if traction but for general use 2wd is fine. Also make sure all tyres match and tread wear is even as uneven tyre wear can damage the system. Electronic handbrakes are easy to get used to, when you get the biting point the handbrake automatically releases but has to be engaged manually.
Hope I've helped
Cheers
Steve