Official Move Approval III

[Omni]

Rasengan-Ha (Physical Strength) (300) – A move that pays homage to Dragon Ball and Dragon Ball Z. Minato takes both hands and places them in a Kamehameha like pose as he begins charging towards his opponent. As he runs at his opponent, Minato forms a Resengan between his two hands as he says the name of his attack, much like Goku would while charging the Kamehameha. The only difference to this is the addition of ‘Ha!’ at the end of Rasengan (Ra-sen-gan-ha!). This move takes 10 seconds to charge, and the charge begins as soon as Minato assumes the Kamehameha-esque pose. This type of Rasengan is also 3x larger than his usual Rasengan, (A result of the charge time). Similar to this

Okay.

Spiralling Flash Super Round Dance Howl Style Three (Ranged, Physical Strength, Teleportation, Hiraishin Kunai) (300) – Minato throws 6 of his Hiraishin Kunai around his opponent(s), he then teleports to each Kunai, one by one, letting off one attack each time he teleports. The aim of this move is to catch his opponents off guard. All though he is mostly limited to simple punches and kicks during this attack, Minato is able to utilize 1 Rasengan during this move. This move is more useful in situations where he is faced with many enemies, such as when he is surrounded or outnumbered. Minato will always aim to get his Kunai somewhere in the middle of the enemy ranks, so that he doesn’t have to move too far to attack an enemy.

This seems like something you could do simply by combining your existing moves. Unless the Rasengan is instantaneous. If it is better in that sense, any downsides?
(More later)

To continue;

Flying Thunder God Slash (Physical, Teleportation) (300) – To use this move, Minato first must make sure he marks his enemy with his Hiraishin seal. Minato, with Kunai in hand, teleports to his enemy and delivers a devastating slash to his opponent’s body.

You can you can already do this with your current moves, so you don't need an extra move just for the combination of teleporting and slashing unless you really want to.

Flying Thunder God – Second Step (Ranged, Physical, Teleportation) (300) – Minato throws his Flying Thunder God Kunai at his opponent while he forms a Rasengan in his right hand. Minato then teleports to the kunai just as it pases his opponent and enters their blind spot. Minato, now in his opponent’s blind spot, thrusts the Rasengan into his opponent’s body.

This too.

Time-Space Rasengan Barrage (Physical, Burst Movement) (300) – Minato forms a Rasengan in both hands and then speeds towards his enemy using burst movement, appearing as if he is teleporting as he runs. Link. When Minato reaches his target he thrusts both Rasengan’s into his opponent’s stomach/Torso area, sending them flying backwards.

You could do this if you simply purchased a double form of the Rasengan. Same cost but that way you can use it outside of this move too. I'd buy it as an upgrade of your existing Rasengan move.