Throw away the long swords.
I'm going to ignore the STR vs DEX debate. I'll just make note that if you are going to invest in DEX as you are doing then you might as well use it for both melee and ranged combat.
That means you ditch the long swords and instead take Weapon Finesse and use rapiers. Because rapiers have a higher threat range they do the same damage as long swords -- even though they have a lower damage die. Because they have that higher threat range rapiers do more damage for effects that proc on crits. And, rapiers are a finesse weapon but long swords are not.
So, throw away the long swords.
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