boostnut - I had issues very similar to what you are experiencing.
regarding the initial surge of orange water after regen --- did you rebuild the softener valve during the resin rebed? if not that is likely contributing to the iron stained water. backwashing alone doesn't clean it out, neither do resin cleaners. you really need to take that valve apart and clean it, replace the spacers, injector, injector screen, etc. Those valves get nasty inside.
could your 6-month old resin be shot already? maybe, if you have iron bacteria and haven't been using resin cleaners with every regen as someone else stated. stepping up your resin cleaning efforts will probably help. but you said the orange water is only after a regen, so this isn't just a resin problem.
do you know if you have iron bacteria? brownish orange sludge in your toilet tank? if so, it makes your situation much more difficult. does your community shock the shared well with chlorine? I highly doubt it, and they probably won't let you do it either as they will all have to stop using water for an entire day or longer.
first thing I'd do is take apart that softener valve and give it a very thorough cleaning. if you can't get parts for it, be careful.
if that doesn't work I'd suggest getting a new softener with a Clack Ws1 valve. Why Clack? given your situation you will need to clean & rebuild the softener valve often, and the Clack is the best valve for that, in my opinion. You can easily get parts online, but you do have to buy the valve from a dealer and it is worth every penny. You are in Illinois? if in the Chicago burbs there are a couple Clack dealers in the area. I can PM you if interested. you can always keep the old softener tank & resin as a spare to swap in at some point in the future if needed (assuming it is reasonably clean). that's what I'm planning to do with my old tanks - it makes resin/media changes much easier.
once you get the new softener installed you will need to clean it continuously with more than just rust removing salt. I add citric acid to every bag of salt
https://www.amazon.com/Milliard-Citric-Acid-Pound-NON-GMO/dp/B01DKRP1GM and I use Phosphoric Acid (Res Care) with every regen. I've also used a product called Crystal Clean
https://www.crystalclean.us/ and it does work very well, but is a bit more costly.
I do have an iron filter, and it removes about 80% of the iron with a tremendous amount of maintenance on my part. I won't go into detail on that here unless you are interested. My iron filter will not work in your situation if you have iron bacteria.