Alright, turns out it actually was my passenger-side headlight. Took out the battery and coolant reservoir and changed the bulb. No sweat, probably about a 45 minute job (thanks Haynes manual).

I'm still thinking about what to do about the rust and bumpers. I might go to a few places this weekend and try to get some quotes or something. I just had some repairs done last month (brakes, exhaust, CV boot), so I'm kinda reluctant to spend big money again. I'll see though.

Couple of other weird things I forgot about. The driver-side window, when I roll it up, seems to go off-track. That is, it doesn't stay in the rubber molding along the side of the window. It goes off, and so when it goes all the way up there is open space between the door and the window. Kinda hard to explain without seeing it. I can prevent this by holding the window and pushing it in towards the driver when I roll it up though, so its not a huge thing.

Also, is there a spring on the fuel door? If so, I think it might be broken, because when I try to open it, the door unlatches, but it doesn't spring open. I rememdy this by having one person pull the release handle next to the driver's seat, and having one person use a knife to pry the door open while it is being released. Its not convenient, but it gets the job done. I'll have to look into what the problem is there.