You can do single-weapon, dex to damage as a slayer, but be aware that you're choosing skills like stealth over combat effectiveness. Unlike a swashbuckler you don't get abilities like the precise strike deed to make up the difference with other combat styles.
Alternates could include trying two-weapon fighting (without dex to damage) which makes more use of slayer class abilities, or an archer as you mentioned, or trying something using combat maneuvers, or simply using a two-handed weapon with strength alone and using the feats saved to become better at stealth and other skills.
If you're starting at first level with your current idea then either you'll dip a level of swashbuckler (likely inspired blade) or you'll suck at combat until you get dex to damage. Oddly enough human doesn't affect that, you can get dervish dance at 3rd level as a slayer with whichever race.
You can get dex to damage as a human at second (Weapon Finesse, Weapon Focus Rapier at first level, Combat trick - Fencing Grace at 2nd), but you can only do it with a rapier. While agile weapons are a possibility, the earliest you will be able to afford to buy one is 6th or more likely 7th level.
This assumes you want to go str 12 dex 18. You could also go str 16 dex 16, and don't worry about weapon finesse or dex to damage.
You can get dex to damage as a human at second (Weapon Finesse, Weapon Focus Rapier at first level, Combat trick - Fencing Grace at 2nd), but you can only do it with a rapier. While agile weapons are a possibility, the earliest you will be able to afford to buy one is 6th or more likely 7th level.
This assumes you want to go str 12 dex 18. You could also go str 16 dex 16, and don't worry about weapon finesse or dex to damage.
Vanguard slayers lose their 2nd & 4th level talents - no combat trick at 2nd.