Welcome to the forum!
The fender IS ugly, just be aware without it the tire will fling water and road crud on you and the bike.
I had helmet noise and buffeting issues (6'3") and tried several screens - all different but not a lot of improvement. Got my best results by actually cutting down a screen (I think 2-3") which gave me clean air to the helmet. It was a cheap ebay screen very similar to stock. YMMV.
Chain maintenance is no big deal once you get the routine down - just get a rear stand if you don't already have one. About every or every other fuel fill-up, after riding put the wheel up and spray the chain while rotating the wheel. I usually do 3 passes, spraying the center and both sides. Much has been written about what lube is "best". Periodically you can clean it if you like, seems to make little difference in the longevity. I clean with either the chain lube I'm using or WD40 - wet a section of the chain with the spray and then wipe off with an old rag before it dries. I don't like brushes due to possibility of damaging the O-rings. The chain may require an initial adjustment after it breaks in some, but then shouldn't need much until it starts to wear out. Adjust to the loose side of the spec...too loose is better than too tight since it tightens as the suspension is compressed.
Sorry, didn't mean to ramble on so long...enjoy setting up the bike and riding!
2016 GSX-S1000F, Red/Black
2014 V-Strom 1000
2011 Burgman 400
2007 Honda Helix
2013 DL650 - Sold