Eddiehaskell:
You've got the right idea about car care, but in my opinion your most important investment is in car washing equipment. Let's face it; most car-care do-it-your-selfer's spent an inordinate amount of time and money in washing their car. You do need to have at least three 5-gallon (or 3-gallon) buckets for the purpose of washing your car. I know that you like the ONR method. I am old-school and still use the spray-hose & bucket method. I just feel a stream of moderate pressurized water (in my case, city water supply) is an effective way to wash contaminants from a car's surface.
You have a good start with a quality WW (waffle-weave) microfiber drying towel. Finding that quality towel and using one is key to drying a car's surface without marring.
I use Optimum Polymer Technologies (OPT's) car wash and add a capful of ONR just to soften the water. If I have a REALLY dirty car, like encrusted bug splatter, I may add some OPT Power Clean to the mix, but that is rare.
I use Stoner's Tarminator on lower rocker panels (watch the plastic mud flaps, though!!) to remove tar and black asphalt debris. I've also used some over-the-counter (OTC) Automotive Formula GooGone for grease and tar if you want to do spot cleaning instead. That can be purchased at Auto Zone.
Also a good mix of brushes is a must. I recently bought a E-Z Detail mini-brush for doing wheels. Expensive? Yes, but worth having something that will really works without fear of marring.
I also have a dedicated wash pad for washing wheels. It's kind of a triangle-shaped one that has a microfiber side and a scrubber side, with a finger pocket. I think it came from Target (of all places!) I use Meg's Detailer Line Wheel Brightener Cleaner diluted 4:1 (Yes, the strong acid- based cleaner because it came as a gallon jug and I have enough to last a LONG time). But if you have aluminum mag wheels, or some high-end wheel, I would suggest (OTC) Eagle One A-to Z wheel cleaner.
Lastly, I use a variable speed leaf-blower for drying after "traditional" (IE, old-school) car washes. Works great to get the water out to nooks and crannies that seem to leak from everywhere and it greatly reduces the amount of water to dry with a WW towel. Now with the ONR-method, that's not a concern.
BTW: most Autopians would not know what your tag name is about, unless they are old enough to remember watching "Leave It to Beaver" on Black-& White TV in the mid-60's (Like me and maybe Ron Ketcham (AKA, Grumpy). That was a good family TV program.