Finally something I contibute to..
First, there are tons of opions and resourses on this topic. Here are a couple forums I have read from time to time
( Yea-- I own a Civic too )
I have used NXT liquid wax for over a year. I do not know about metallic colors, but it makes dark colors very rich. On my Frosty vibe, it is a bit of a PITA since it drys white. Difficult to see to remove. The directions will tell you to apply it to the entire car and wait for it to dry. I have applied it both by hand using a Meguiar's soft foam applicator pad and by PC w/ a 5.5" Lake Country CCS finishing pads. Depending on temp, speed of application, and humidity, you may or may not complete application before your starting section dries. Apply a very thin coat. If it dries thick, it can be a beech to remove.
Remove with a thicker pile of microfiber. The Meguiar's supreme shine microfiber work quite well. Not all microfiber is the same. Some will leave behind very small fibers in the finish. These are usually the cheap one. So don't skimp. Cobra makes/sells better microfiber imo. Cobra's "bone" microfiber sponge is tops washing a well rinsed and degreased car. Do not wash microfiber cloths with anything else in the washing machine especially cottons.
Other waxes -- I have used a number of cleaner type waxes with good results. They do not last as long as NXT, but will reduce the need for clay baring. IF you car sits outside, they are a good choice.
Your order is correct. Some will wash again after the clay, but it is not necessary, unless the clay really came back filthy. I will clay my car maybe twice a year. It is garage kept. If you drop the clay -- throw it out.
I highly recommend a two bucket method when washing using grit guards at the bottom of both buckets. I use one bucket for the tires, another for upper body ( clean ) and a third for rinsing whatever washing device I am using ( dirty ).... so technically three buckets.
Drying the car -- I have used very soft terry cloth towels, microfiber towels, and even a leaf blower... Funny as it may sound, a leaf blower works great getting moisture out of small cracks including the side mirrors. If you have hard water, you should dry the car with the least amount of pressure possible prior to clay, polish, wax.
I have used Meguiar's deep crystal system polish on my PC on occassion with good results. I have not tried it by hand. This is one area of detailing I have not persued in detail.
You can go over clear plastics with the NXT, but keep it away from blacks -- front grill, around winshield. It will stain black plastics white.
So not work in direct sunlight...