double post woops. <snip>
As far as the rear drums they are pretty good they typically just need to be adjusted as they don't self adjust well. Take the drums off and using a screw driver move the star wheel up a few clicks or at least until drum tight again and you should be good for a while. I have done this on my Eco with Drums every 10K since I bought back in 2013. See the links above for the fog lights.
You can get aftermarket and OEM fog light kits on Amazon and Ebay. You can also get the OEM kit on GM parts sites like gmpartsdirect.com. I got my fog light kit from the dealer. It was part number 95248415. Not sure if it is the same kit for your Cruze, but you can ask your dealer to look up the correct part number for you.
Rear drums are actually pretty good and should last a long time. I doubt that you would notice any improvement in braking by switching to disks. Some people are intimidate by drums because there are a couple springs and clips, but the shoes are actually pretty easy to change. There are a ton of videos online that show how to do it correctly. It doesn't take much longer than changing pads on disk brakes. It is important to understand that the drum brakes are automatically adjusted every time you pull the parking brake lever. There is a thread on this forum that explains how to adjust them manually.
Do a Google search for the door panel. There are literally dozens of videos that show how to do it. Here is one I found for you: https://www.youtube.com/watch?v=jv4U_67auzQ
The Cruze service manual recommends replacing the plastic panel clips when you remove the door panel. Most people don't. I decided to try it, and I noticed that the panel is tighter and doesn't rattle as much with new clips. You can get them cheap on Amazon. There are two types used in the Cruze door panels
Yellow clips: https://www.amazon.com/gp/product/B007AYCVD8/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
Grey clips: https://www.amazon.com/gp/product/B007AYCV92/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
For the dent, I recommend calling a local paintless dent repair person. They do a great job.
Care to share the eBay seller? I am only finding them for $180I just got a Cruze diesel last month, and decided it needed fog lights as well, both for looks and function. While searching, I scored a factory kit with switch, harness and lights on ebay for $120. Haven't put them on yet, will probably be a winter project.
I also wanted to mention if you're thinking about switching to rear disc brakes, you should see if it requires a different proportioning or ABS valve. I don't know myself, maybe someone else can advise. It would probably be a large addition to the project.