Any top surface you need to wash and dry in a "horizontal" motion aka left to right. You need to do this in a straight line.
Any side surface you need to wash and dry in a "vertical" motion aka top to bottom.
This will minamize your visable scratches due to a circle scratch can be seen from a 360% angle, those straight line scratches wont be seen unless you at the right angle.
Second thing i notice, any thing that is just a "wax" is a waste of time if it doesnt last long. From my understanding a black car in the sun can get hot enough to melt off any normal wax any ways.
I think you will want something like zaino
Zaino Store
Zaino can be advanced and complex and it also can be easy.
Heres a beginer strategy that i thought off that i assume will work.
This is a first time thing to set up your clear seal, you wont have to do this steps again.
#1Wash with dawn, normal no scents. You do this just once, hopefully wont have to again for long time
#3 Clay bar the car.
Z-18 ClayBar: Zaino Store
#2 Invest in leaf blower or air compressor to dry your car or do by hand with "soft" towel. I use a Toro leaf blower this thing works great and saves me alot of time.
#3 Use Zaino CS "clear seal"
Z-CS Clear Seal: Zaino Store
Normal wash would be this.
#1 wash with
Z-7 Show Car Wash: Zaino Store
#2 dry with the method above
#3 Apply Z6
Z-6 Ultra Clean Gloss Enhancer Spray: Zaino Store
#4 If your looking for the extra shine, optional and not needed apply z8
Z-8 Grand Finale Spray Seal: Zaino Store
#5 your done
For days you dont want to wash, becuase you have this stuff on your car most dust will wipe off with ease with a California Car duster.
I use z2 and z5 on my car but in my opinion those can be a mess if not done right, i still have not perfected there uses, this method above seems easyer and harder to mess up. If you want when i have time i can post what i do to my car normaly, but it seems little more intense then the wipe on and off solution i gave you.