What do you think will be the best split for an Oathbreaker/Hexblade?

[Agent Chieftain]

Planning out some build ideas for when patch 8 arrive, and Paladin/Hexblade seemed like an obvious fit. Here's what I've come up with so far:

Oathbreaker 11 / Hexblade 1 - Basically a full Paladin that gets to consolidate all their abilities into the Charisma stat.

Oathbreaker 10 / Hexblade 2 - Trades improved Divine Smite for Eldritch Invocations and an additional level 1 spell slot.

Oathbreaker 8 / Hexblade 4 - Gains additional feat in exchange for losing level 3 spell slots. Also gains additional level 2 spell slots.

Oathbreaker 8 / Hexblade 2 / Fighter 2 - Gives up both level 3 and additional level 2 spell slots for maximising the number of first turn actions and an additional Fighting style.

Oathbreaker 8 / Hexblade 1 / Eldritch Knight 3 - Gives up Eldritch Invocations and 1 Warlock slot. Regains Level 3 spell slots, and now has access to additional spells like Magic Missile and Wizard ritual spells.

Oathbreaker 6 / Hexblade 6 - Loses Aura of Hate and gains Accursed Spectre. Level 3 spell slots are now Warlock slots, and recharge after short rest. Also gains Haste, Animate Dead and Call Lightning from Pact of the Tome.