By far the "best bang for the buck" training I have had is an afternoon playing paintball.
There is nothing like that painful "SMACK" on the cheek or in your ear canal to bring home to you that if you had pulled that stupid move for real you would be DEAD!!!!!
Paintball has obvious limitations, but it inflicts pain, and pain cuts through the crap and teaches at the gut level.
The answer to your original question is that you should have two of your main pistols, and three mags each for each pistol, so you need a minimum of SIX mags of hi-caps when the Clinton crap collapses.