I know you put your order in, but if you change your mind or anyone else reads this I would say RO is overkill. Most filter systems with a two stage would be fine. This would include a pre-filter and charcoal filter. That would get you close to what you want probably. RO wastes more water, is lower water pressure, and actually removes desirable minerals your body needs. The RO replacement cells are a little spendy too. FWIW once your new RO cell expires after a year or two you could bypass it and just used the other components in your new system. HTH
You might be right that RO is overkill, but it's the gold standard for water filtering, all the soda bottling plants, & breweries have some sort of RO system for their water supply.
The modern RO systems don't waste as much water as they did 30/40 years ago. When I first looked into RO systems in the late 80s, they wasted about 2 gallons to produce 1 gallon of pure water, because they were sending water to waste 24/7, now they have flow valves, so they only send water to waste while actually producing water, and if you want, you can capture the waste water and use it on potted plants or gardens, the water has no chlorine and it's better than for the plants than using hose water.
If water pressure is an issue, the make a permeate pump, which reduces system backpressure, this is recommended if you attach an ice maker to the RO system.
Prices for the filters and RO membrane cost me about $125 for a three year supply. I replace the three pre-filters every year and the RO membrane and post filter every 3 years. I test my drinking water regularly, and as long as I maintain the filter change schedule, I have not had any issues.
I'm not trying to change your mind, everyone gets to make their own decisions, but it's good to have good information to make educated decisions.
