With the Mn I round up... and come up with 21 comp hardness..
What size are the media tanks?
You could rebuild the unit, not sure if the Kinetico 60 one that you have still has the same parts as the newer one today.. some one might have a used valve laying around..
You might be able to get the resin that you have back,,,, large dose of iron out and then a couple of large doses of salt... all of that taking time,, days to get done..
if the tanks are like 10x47 in size then you might be able to take one of the tanks, put a new dist, or turbo in to it, new resin 1 to 1.5 cubic depending on what dist gets used and a new fleck or clack valve some replumbing regut the brine tank and call it good..
A single unit would work for the 2 of you, if it has the computer control it could be set for gallons with a day defualt say 12 days..
Just some ideas that came to mind.