ahhh yes bondo and sanding... fun fun. lol. Pick up ur self a cheese grater for the bondo it makes sanding alot easier. It sucks now but wait till its all done and looking awesome!
Looks great! Not sure if black is different but when I did mine in red, it didn't really pop until the clear went on. In case that's the look you're going for.
I wouldve stayed with the exterior color for the engine bay. Other than that looks great