Looking for thoughts on stats, feats, whether/when to take the warlock dip.

Setting: Odyssey of the Dragonlords
Race: Siren (+2 Charisma, +1 Dexterity)
Class: Bard (Glamour) 19/Warlock (Hexblade) 1
Background: Urchin
Stats: STR 8/DEX 15+1/CON 13/INT 10/WIS 10/CHAR 15+2
Basic Bio: Nightlife singer with a tragic past flirting with fey powers to get her life back - at any cost. 

• Worth Noting:
  • Our game is using point-buy, and we’re starting with level 1 feats. 
  • The setting comes with the option of Epic Paths that include a lesser magic item, great magic item, and a blessing. 
    • Lesser Item: Amulet of Health
    • Greater Item: Dancing Sword
    • Blessing: advantage on saving throws against spells and other magical effects.
• Parting Thoughts: 
  • I fear I’m taking too many feats - but I love them all! I find it hard not to front-load feats so I can get them sooner.
  • The Hexblade dip isn’t strictly necessary but it ups my damage potential (eldritch blast, charisma weapon attacks with a dancing sword), adds flavor, and comes with Shield too. 
  • Concerned about my constitution score - but the hypothetical Amulet of Health should cover me until the later levels (when better magical items may present themselves).

I rate her with a 8/10. Not bad.

I'd personally be awful leary of pushing off my ASI until end game in favor of feats.  I'd personally rather buff up my spell save DCs by raising my charisma first.  I don't find mask of many faces particularly useful, but that's mostly campaign dependent.  My Glasya tiefling glamour bardlock has it (disguise self) as a racial and I remember using it one time.  For my campaign, it's certainly not something I'd spend a feat to acquire.

There's nothing wrong with your plan, I just don't think I'd be making the same choices.  It's hard to go wrong with a Glamour bard, mine even as a primary warlock feels amazing.

Thanks for your feedback - and upon thinking about it, I agree with you about Eldritch Adept (Mask of Many Faces). I think I'm letting flavour blind me a little :P. 

With five 1st level spell slots - I'll basically be able to cast Disguise Self whenever its useful anyways. And even if our campaign goes in an extremely social direction (which I doubt) I can always take it as a later feat. 

I'll consider shifting my plans and going with Lucky (4th level feat), Charisma ASI (9th level), Resilient CON (13th level) - and play it by ear for the final two. Thanks again!

Quote from Dertinus >>

I rate her with a 8/10. Not bad.

 Thanks! Any suggestions/advice you have would be much appreciated. 

I love my backstory and character concept for her - just want to make sure she's not lacking in power too. 

I definitely do not think you will be lacking in power with a glamour bard.  Your spell selections and playstyle will make or break you as with most spell casters, but bards have pretty solid kit.  Glamour in general feels very solid.  My original plan was only for 1 or 2 levels of bard.  I ended up with a third level for second level spell slots AND for the glamour bard's bardic inspiration.  It's opened up a lot of tactical support plays for the melees in my party.  If I ever played a pure bard, I think I'd definitely go Glamour.