Holy crap that damage is identical to my wreck.
You can hammer that fender corner back out, but it will take some brute force - it is very strong.
You will need a new headlight, nobody really sells just the shell - but even if they did, it is not like halogen bulbs are that expensive. However, you will definitely need to un-oxidize the passenger side so it doesn't look like like cyclops.
You can probably rip that corner piece off the bumper, Most of the marks undeneath is dirt and will clean off - I would say this would look better than trying to tape that broken thing back on.
About the hood, no it is not difficult to replace - just 4 bolts. You will want 2 people when installing/removing - as it is hard to unbolt and hold the hood up yourself. I have done this many times.