Looks good, great progress. It's time for a quick wash under the hood. You should have done it before the open element air cleaner, but you can wrap that.
Get a can of engine degreaser, and cover the air filter with a couple of plastic bags. With the engine cool, and water hose out and ready, spray everything under the hood, use about half of the can. Do the cleaning in shade, not direct sunlight on a hot day. Give it about ten minutes to soak, then carefully spray it all off with the water hose. Don't scrub anything, you could with a nasty wash mitt, but it's not critical.
The improvement will be wonderful, trust me. I clean under the hood of my vehicles about twice a year. It's much better to work on, and looks a lot better. Regards,