My optimized Coffeelock build

Really only works if you put a 13 or higher in Dexterity, which is good for your AC

Race: Eberron Warforged (No need to sleep, so no exhaustion)

Level 1: Sorcerer (Saving throw proficiency for Constitution)
Level 2: Fighter (Proficiency in weapons and armor, good for survival early-game, as well as Second Wind, which restores on a short rest for 1d10+1 health)
Level 3: Warlock (Pact magic unlocked, could be swapped with level 4)
Level 4: Sorcerer (Unlocks Sorcery points, can start coffeelocking)
Level 5-6: Warlock (Level 3 Warlock, has 2 level 2 pact magic, so 4 points a day. Fathomless gets a lot of passive perks for the water [Such as swimming speed] and an extra spell learned, but really, anything that gives non-long rest specific perks is good)
Level 7-13: Sorcerer (more points, more spells. Divine soul has a lot of short rest/passive skills, but again, anything that gives non-long rest specific perks is good)
Level 14+: Whatever else you want. You may want more in Sorcerer for more Metamagic and Sorcery points, or perhaps more in Warlock for more efficient spell slot gain. Maybe some in Druid so you can feed and heal an entire small army in just an hour.

Tip:
Magic Initiate spells can be casted with a regular spell slot.

Any feedback?

Personly I think you are going to be be very under power for most if not all of this build.  At best you will be Sorc 16 meaning you will never get 9th level spells.

Some things to think about vs just going soc.

2  Still casting like 1st level but could be a good trade if you need but cleric would be better if you just want armor and weapons as your caster level would stack or even take the lock here instead.

3 you are effectively trading 2nd level spells for 1 more first and you are missing a sub class.  if Dragon you would be getting 10+dex+chr mods as ac.

4  you are still only using 1st level spells and you you not get a feat or +2 to a ability

5 Still only 1st level spells when other are throwing fireball extra.

6  You are only new getting a 2nd level spell and a subclass.

7 still only level 2 spells vs level 4 and getting your subclass for soc

8 getting your first feat when you should have 2 already.

9 just getting 3rd level spells 5th level that others have.

I think the trade is to much to be worth it.  1 or 2 level dip into lock may be worth it for a soc but giving up 4 soc level I think is to much.  Mind you I feel a Coffeelock is weak as you are trading high level spell for more low level ones.  Also remeber each short rest is still a hour and you would only get back 4sp.  Since you can not have more then your soc level of SP at a time (5.5 at least) you will not be able to bank  to much.

Just gonna say: "does not sleep" does not mean "does not have to take long rests"

I think this build is the poster child of do not multiclass.

Unless you have rolled several 18s this is super underpowered.   Deathmvp has great points.  To me #1 flaw is a 7th level character that has the same abilities as a 1st level character.  But Deathmvp  has the rest of the points in a good order.

Maybe some in Druid...

You want to have 4 different classes at 14th level?  Not sure how a 1st level druid can "...and heal an entire small army in just an hour...."

3rd level when a character gets their subclass is where there is a big jump of "power" but you have to wait until 7th level to achieve it?  As mentioned very underpowered. 

On paper it looks decent, but on the table, no way.

Thank you for the feedback!