Not telling you it's the right thing to do but that's how I allotted my points:
*Feel free to check it if you want a global idea of what I think is important for Archer. Don't look if your desire is to not be influenced
STR +8 (Attack Power)
VIT +7 (Enhancement Magic Potency)
DEX +20 (Damage)
INT
MND
PIE +10 (Damage)
Again this is my vision of things.