Your Paladin build is broken if you use the 8 str...
I'm not talking the str vs dex argument that has gone on forever, I think a dexadin can work fine, but at 8 strength you're armor gimped even if you use a rapier. And you can't smite with ranged weapons...soooo
Also why the odd con? If you plan to use volo's eye I'd add 1 to charisma (17) and reduce con by 1 without changing bonuses, and reduce int by one (this does reduce the bonus, but won't reduce rolls when you use the eye, which would cause you to lose the +1 anyway).
