Cowboy-bebop inspired monk subclass

I made this subclass for a campaign I was running where one of my players wanted to play as "spike speegle" from cowboy bebop. I think it's a little unbalanced but worked perfectly well in the campaign I was running him in. Mostly I just likes that I could make all the subclass features references. 

Way of the Space-cowboy

[See you space Cowboy]

Starting at 3rd level you may substitute charisma in place of wisdom for calculating ki points and other class features.

[Fallen angles armor]

Starting at 3rd level You may use your Charisma instead of your Wisdom modifier when calculating the AC given to you by your Unarmored Defense feature.

[See you space samurai]

Also, starting at 3rd level, you are able to use the manifestation of willpower for offensive purposes. You can spend 1 Ki point to add your Charisma modifier to all damage rolls of your unarmed strikes and monk weapons until the end of this turn.

[Tiger striped cat]

Finally, starting at 3rd level, you are more resistant to manipulations of the mind than a normal man is. You have advantage on saving throws against being charmed or frightened.

[First rule of combat]

at 6th level add your charisma modifier to to your initiative roll.

[Easy come easy go]

At 6th level you gain weapon proficiency in guns as well as skill proficiency in deception, insight, and slight of hand. If you are already proficient in these skills you can instead add double your proficiency modifier when making an ability check using the skill.

[Hunger is the best spice]

Starting at 6th level you are immune to food poisoning and can store any palm sized object in your throat.

[Whatever happens, happens]

Additionally, starting at 6th level you can spend one Ki point to gain advantage on one Charisma based ability check. You may use this feature after you have seen the result you rolled, but before any of the effects are applied.

(Improved at 17th level to apply to any roll your own or the enemies)

[Find out if I'm really alive]

Starting at 11th level upon being reduced to 0 HP you reincarnate at half HP with resistance to all non-magical bludgeoning, slashing and piercing damage. And restore all of your Ki points. But fall unconscious after 1 hour and stay unconscious for 48 hours (This effect requires 7 days to recharge)