Hmmmmm here is what I have:

.22 LR Anschutz
.22 LR Savage
.30-30 Winchester M94
.30-06 Ruger MkII
12ga Winchester Pump
12ga Stoeger M2000

I'm thinking either a:
Benelli 12ga
Ruger Mini 14 in .223
Handi single shot in .223

what do you guys think?

Mini-14 in .223 or 6.8 SPC.

If it was me, and I wanted a .223, I'd get an AR15 before I'd buy a Mini 14.

You might also consider a bolt action in the .243 Win - .25-06 range...

I say but them all. But if your budget cant afford that then go with the Handi Single shot 223. The Mini 14 isnt very accurate.

Find ya one of those AA-12's I posted the video of...

You would definitely be DA MAN .... then...

I'd get a .22-250 over a .223, but certianly you can fill that small bore gap. or how about a .338 or .375?

I'd upgrade to high quality scopes for the rifles, and more ammo for everything...

DM

your loaded up on the big calibers. I would go with something smaller.. Saya 243 or 260.

Retaks is right. You'll be disappointed with Mini-14 accuracy. They look good, function good and shoot like a shotgun.