Paladin 1 Sorcerer 1 Warlock 1 Champion Fighter 3 Valor Bard 6

Tell me if this abomination is good:

Level 12, 20 CHA, 10 DEX, Elven Accuracy, Pact of the Blade (shortsword), use Innate Sorcery before combat or during round one.

All the attacks below have triple advantage thanks to Innate Sorcery or Vex, and crit on a 19-20 (27% chance per attack).

1. Green-Flame Blade with shortsword (vex): 1d6 + 2d8 + 5, second target 2d8 + 5
2. Extra Attack shortsword (vex): 1d6 + 5
3. Scimitar (nick, using dex mod): 1d6 + 0
   Action surge
4. Green-Flame Blade shortsword
5. Extra Attack shortsword
6. Bonus Action: Divine smite (lvl 4): 10d8 on crit

Average damage: ~150 across 2 targets if you crit at least once (80% chance)

You would be a lvl 8 spellcaster, wearing plate armor and even a shield if your DM allows weapon juggling. Reaction free for Shield and Absorb element spells.

Stats: 13 STR, 10 DEX, 16 CON, 10 WIS, 8 INT, 20 CHA.

Race: Wood elf for +5 feet of movement as you don't have the strength requirement for the full plate.