OVER TIME is an accurate statement on CaCl rotting out wheels, CaCl is a salt after all. My dad replaced the original wheels on his 1956 Ford 800 a few years ago. 42+ yrs on the wheels didn't seem all bad to me. They started to rot out around the valve stems. So long as you hose off the wheel good after checking air pressure, etc. they will still last a LONG time. Of course CaCl requires the use of a tube. CaCl is also the most dense giving you the most weight. WW fluid is a good cheap deal, but signicantly lighter than CaCl. Seems it was 2 or so lbs/gl lighter, but someone else on here probably knows the real number. Seems that anti-freeze will be the most expensive, and only marginally heavier than WW fluid. Of course, you can alter the freeze point of an anti-freeze solution by just adding more ($$$). WW fluid will probably only be good to -20 or so. Or we could all just move south and not worry about it.
I like wheel weights, they are removable. However if you are on slopes, loaded tires contribute to a lower CofG. Wheel weights will have a marginal affect, or if this is an issue, your goal is all you can get.
Farmer kid usetabe, Farmer Wannabe