D&D 5E Suggestions on this Paladin/Warlock build

[Brakkis]

I had 2 reasons for the pally 7 / lock 3 / bard 9:
- pally 8-12 is a deadland (IMO), you might as well grab a caster for more smite slots
- bard 3 has 2 expertise and an extra proficiency

If you don't want bard, rogue 1 and 6 offer expertise also.
- pally 7 / lock 3 / rogue AT 10 has 4 ASI and is caster 6
- pally 8 / lock 4 / rogue AT 8 has 5 ASI and is caster 6
- pally 12 / lock 4 / rogue AT 4 has 5 ASI and is caster 7

Of course, if rogue is also out for RP reason and you don't want to refluff...

Rogue could work. It could be worked in with some moral wiggling. I lack the Dex stat for it though, thus why I was looking at Fighter.

The ones I'm averse to are Barbarian, Bard, Cleric, Druid, Sorcerer, and Wizard. Probably Ranger too. Mostly because that one is disappointing.