The finish line is within reach. Adding a capacitor helped with LC2 (thanks GunrunnerJohn). Below is the final assembly of the internals. You can see the LED's placed on the mounting brackets. I think a few more zip ties were added to organize the wires a bit more after. The shell has since been placed back on and shortly I'll shoot a video of the final results.
The cars always seem so huge at the start of a project, and by the end, it is a jumble of wires. However, with the shell on, it looks the same as it always did.