That about sums it up.

I shoot 2314's myself.
Needed to go that big with the O.D. to get 5" helicals to clear a flipper.

BTW, thicker walls not only make an arrow stiffer, but heavier as well.
Wall thickness makes a much bigger difference in arrow weight than arrow length does.

I think 2314 is a decent compromise in that spine value.
Not the heaviest, so you still have a fairly flat trajectory.
Not the lightest with thinnest walls, so you still have some decent durability.