Tankless Water Heater + Softener + Conditioner but no RO for $8,600 - Worth it?

I have a 21+ year-old water heater that's starting to drip (previous post pasted below). I'm replacing it with a tankless water heater with a recirculation pump, and a Pentair water softener and conditioner. Below is the estimate from the plumbing company in SoCal that has a verified license and also a Yelp guarantee. Total cost $8,600 - Is this a good deal?

I'm also not getting an RO system at the sink b/c I'm getting the conditioner. I read that the conditioner does not reduce the sodium content in water and that only an RO system can reduce sodium in water. Thoughts?

1. Navien NPE-210A2 Tankless Water Heater (UEF .97 Rated) - $4600

Includes > Installation hardware; Isolation valves; 3/4" copper hot and cold water supply lines and shut-off valve; Flexible gas line and shut-off valve; 2" PVC venting; Condensate line run to sanitary drain or exterior; Gas sediment trap; Temperature and pressure relief valve; Warranty: 1-year labor, 5 years parts, 15 years heat exchanger

2. Pentair Water Conditioner - $1600

9" x 48" fiber-wrapped tank; Isolation valves; Installation hardware; Seismic straps; 1/2 gac 1/2 catalytic carbon

3. Pentair Water Softener - $2400

Fleck 5800 SXT valve; 9" x 48" fiber-wrapped tank; Isolation valves; Installation hardware; Seismic straps; Drain in 1/2" PEX to sanitary drain or exterior; 11" x 36" brine tank

https://www.reddit.com/r/Plumbing/comments/1h4ftlt/tankless_water_heater_or_not_please_recommend/