Here are a couple of photos of our upgraded system. We have acidic water and iron bacteria to deal with. Per your technician's recommendations we changed the media in our existing neutralizer filter and added a Greensand Iron filter. So far, so good – getting no more iron water thru to the house. Saved quite a bit of money by re-using existing filter and chlorine pump, and doing own installation.
If starting over would have bought flex lines to connect to filters. Would have made the plumbing easier.