Quote Originally Posted by Jon talks a lot View Post
I assume it would look something like this:

Race: Half-Elf
Class: Hexblade 1, Valor Bard 19.
Ability Scores: 8 STR, 15+1 DEX, 13+1 CON, 8 INT, 11 WIS, 15+2 CHA.
ASI's (In no particular order): +2 CHA, Elven Accuracy (CHA), Sharpshooter, Crossbow expert, Medium Armor Master

Using spells like Quick Quiver, haste, or other combat spells.

Is this any good as a archer, or does the dpr of gloomstalker / fighter archers or hexbows outweigh the advantages of being a full caster in addition to archery?
You've got a pretty solid build, though it probably won't hit the pure DPR of a fighter or EB-using bardlock. Your ASIs are in good order, but I might suggest making Con 16 and skipping over Medium Armor Master -- 1 HP per level and an open feat will mean more for you than the 1 AC and stealth at Level 20.

In terms of order-of-operations, Elven Accuracy should probably be your first feat. Other feats can be argued to go wherever (though your last feat is essentially a nonentity).

As for spells at later level, maybe look into getting a smite spell to really take advantage of that Elven Accuracy.