Start as Warlock or as Fighter?

Originally, I started as a fighter, but could not decide on a Constitution-boosting stat that fit the character I was going for. Then I figured, what if I didn’t start as a fighter and took Resilient - Constitution?

My plan is to start Warlock from levels 1-5 and then take Fighter at level 6 once I’ve earned the major spells and abilities from being a Warlock.

Pros: 

Free weapon (pact of the blade)

Stealth enabled

Less delay on spells and warlock features up to level 5

Extra save proficiency

Cons:

”Waste” money on Studded Leather

Can’t use scale mail or shield until level 6

Delayed fighting style

No constitution save proficiency until level 13

Am I making a mistake switching proficiencies around unnecessarily, or is there something to not delaying my first warlock stuff by one level.

If you could, please let me know!

www.dndbeyond.com/sheet-pdfs/Actionsparda_165040730.pdf

I mean, just don’t buy studded armor if you think it will be a waste- an extra point of AC is nice but not really essential.

About the only reason to start as Fighter is for Heavy Armor, but anything that will actually outperform Medium/Armor of Shadows requires an STR investment as well, so it’s a question of if you think the stat spread is worth it.

I think it’s actually 2 AC, taking me from 12 to 14, but I see your point.

I forgot to mention too that I didn’t want a strength-based or heavy armor character, so that works. I‘m not positive whether or not it’s worth it to dump strength in favor of a dexterity build, but it’s what I feel my character would be like, so as long as it “works” well enough.

Thanks for your comment!