Be cautious with that water. I'm on a well too and actually had to stop using amendments with Calcium in them because of how calcified my well water is. The Calcium in well water is actually not water soluble, so what happens every time you water is the Calcium in the well water will stay in your soil in the form of salts. Well water will cause excess Calcium to be in your soil, which will eventually cause pH issues because your pH will always be at around 8 (my well water's pH is also

. I had the pleasure of dealing with this for ~2 years, so I got to find out about this the hard way.
In fact, the only reason I realized the Calcium was a problem was because the bottoms of my fabric pots were showing the same scaling that my faucets get. Eventually I realized the excess Calcium was causing issues for me.
Remember how I mentioned the Calcium isn't water soluble and will build up in the form of salts? That salt build up is pretty much dolomite lime, so every time I watered was like simultaneously top dressing with lime. Needless to say I had all sorts of problems that had me scratching my head for years. My soil had loads of Calcium in it from the Gypsum, Crab Meal, and Oyster Shell Flour as the soil buffer.
I finally dealt with that and found a way to make my well water work for me. I made an entirely new batch of soil, omitting all forms of Calcium when mixing my new soil. No lime, no OSF, no Gypsum, absolutely no Calcium in the soil mix. My theory was that my water will act as the pH buffer, due to it effectively being dolomite lime infused water. I used peat moss (very acidic, ~3-3.5pH) and no lime/calcium inputs, and my calcified well water (8pH) and I haven't had a single issue every since. My pH is constantly around 6.5 now, perfect.
Did you notice any "phantom" deficiencies in your last grow using well water? Signs of Ca, Mg, K, P, and N deficiencies were common place for me, combined with stunted growth.
I'd personally recommend not even dumping your old pots. Simply grab yourself some compost and some organic amendments of your choice and top dress the pots with them, keeping the soil consistently moist until you're ready to use it again.
However, you'll need to take the lime from your last grow into consideration. If the lime hasn't fully decomposed yet (and it likely hasn't) then you may want to look into making new soil with zero Calcium inputs, or getting RO water some how. You won't have much luck using pH down in the well water, the calcium content in the water will pretty much always keep it buffered at 7.5-8 no matter what you do. The amount of money you'd end up spending on pH down is better used to get yourself a RO system, or simply making a new soil.