Welcome to the forum man and congrats on your new car. Sucks you were in an accident, but thankfully you're alive.
Unfortunately with VWs you must pay to play meaning you gotta dish out a pretty coin to enjoy your car. If you don't, keep your car stock and enjoy it.
Water pumps are notorious for going bad, it was a huge flaw, but don't worry your warranty covers it for now. My friend has an early 2012 gti and has gone through 4 water pumps. He bought the car brand new and his first year and went through 3 water pumps. Shit happens.
The R8 coilpacks are more preventative care maintenance than anything else if you want to be tuned. Trust me, you don't want to go into limp mode with the stock coilpacks dying on you. Worst feeling ever.
Aside from shitty waterpumps, if you own a manual transmission you also have a crappy clutch. Stock clutches have died around 30K miles on these cars. Tuning your car kills it faster. Unfortunately, you don't know when it'll happen, but it will (especially when tuned)
Other than that, keep up with your maintenance, take care of your car and you'll be set.
I'm on my 4th VW and I love them, aside from some headaches you may encounter, the juice was worth the squeeze, and will continue to do so time after time.
Good luck with your car, and read up on here if you get lost or have questions. Owning a VW can be a horrible experience if you don't know some basic information