So this holiday I've been looking at some Dr. Z amps at my local music store and I am very interested in buying one. I was thinking of buying a head instead of a combo, but i don't have a lot of experience with cabinets/speakers etc. The three Dr. z amps I've been looking at are:

Route 66: 32 watts
MAZ 38: 38 watts
EZG-50: 50 watts

I wasn't a fan of the Dr. z cabs to be honest so I'm looking at maybe an avatar.
I was thinking of just using a 2x12 cabinet, but how much louder is a 4x12?

I have a few speaker choices but am not sure what to choose:
-2 Celestion G12H Heritage: 60 watt cab
-2 Vintage 30's: 120 watt cab
-2 Alnico gold's: 100 watt cab
-or a mixture of any of them
-possibly 4 alnico blue's: 60 watt cab

What would be your choice of speakers to match any of those amp heads? Are the alnico gold's worth the extra money to provide a high wattage cab for future use with other amps?
more speakers does not make it louder, just more defined and stuff like that, it's more tonality wise than anything
My Guitars:
Gibson Les Paul Studio
Epiphone AJ
Ibanez Strat Copy

Orange Tiny Terror Head
Old beaten up Peavey cab
Marshall MG30DFX