This class is only "half caster" insofar as it caps at 5th-level spells. Otherwise, it has a ridiculous capacity to recover spell slots, to the point where it's just about putting sorcerers and warlocks to shame with its ability to cast spells of 5th level and lower.

Add to that some potent 1st-level features that blow away the goodies that the PHB paladin and ranger get, and you have one overpowered class. For instance, unless I'm misreading, you have no upper limit on the number of clones you can have active at a time, save for your per-long-rest cap on using the feature in the first place.

Overall, I would suggest ditching all the spell slot recovery, and spreading the cool spirit features from 1st level out a bit, if only because they seem more thematic than "moar spellz" does.