Experience has shown that very very few if any people can keep up with how many rounds they've fired in a gunfight. As Robbie Burrrrrrns put it, "The best laid plans o' mice and men gang aft aglee." Or as an ancient military maxim says, "No plan of battle survives first contact with the enemy intact."
In short, this plan may work for you now, in the comfort of your computer chair, but when the chips are down how will it do? I'd suggest without too much fear of contradiction by ultimate reality that this plan will fail if it ever has to be put to use. Whatever you think will happen, won't. When you need to shoot through the sofa to nail the bad guy who has taken cover behind it and is busy gansta'ing rounds over the top, you'll have a birdshot round in the chamber. And so on.
In short- "candy cane" loading is a plan that's almost certainly doomed to fail.
So what do you do instead? World class fighting shotgun trainer Louis Awerbuck (
http://www.yfainc.com/ ) carries a coach gun loaded with slugs in his travels to teach classes all over the US. At home he has a Browning semiauto, also stoked with slugs only. He says he isn't smart enough to keep up with more than one kind of ammunition.
i'm obviously not as smart as Louis, because I try to keep up with two kinds of shotgun ammo. Here we keep tight-patterning 00 buck in the magazines of the 'house guns' and have the Sidesaddles loaded with slugs. Shotguns are the go-to long guns here and may have to be used outside as well as inside. Ranges may stretch out longer than buckshot can handle, or more penetration may be needed than buckshot can manage. Brenneke slugs are the answer there.
Training teaches you what you need to know- and gives you some exposure to pressure, although looking like a fumbling idiot in front of twenty other shooters isn't quite as much pressure as getting shot at. Practice makes sure you 'groove' the skills you learned in training into muscle memory so they can be performed without thinking about them.
Fortunately the odds are that circumstances won't ever arise that will prove either of us wrong...
lpl