I have always appreciated how complementary a 12" and a 15" are together, like your Subway 112 & 115.
A 12" combo would be my natural choice, provided that the spkr had the quality and wattage. This is probably the smallest size, weight and cost formula.
Then you will have a modular system for different sized gigs.
I simplified still further. My combo was wired so that I could also use it just as an extension cab with a bigger amp (and the 15" cab).
My system relied on just 2 very good spkrs.
Compact and efficient, and easy to shift or store.
A 12" combo would be my natural choice, provided that the spkr had the quality and wattage. This is probably the smallest size, weight and cost formula.
Then you will have a modular system for different sized gigs.
I simplified still further. My combo was wired so that I could also use it just as an extension cab with a bigger amp (and the 15" cab).
My system relied on just 2 very good spkrs.
Compact and efficient, and easy to shift or store.