[quote=@Zarkun]
I fear I may have misinterpreted the power list. Are they the powers he uses or that the Order over all uses?
[/quote]

I think this rp wanted some canon involved, and as far as I am concerned, order of the grey does not exist within star wars canon. Secondly..  Mandalorians hate jedi, so I doubt one would ever become a jedi, though possible, highly unlikely. Secondly you list several force powers for one character who is just 21, who I doubt has really mastered all those force powers. The character seems to have mastered everything several jedi masters/sith lords would be unable to. 

Force fire is not a "family power", as it is not limited to your non-canon family.

This is what I see as issues, from my limited knowledge of star wars.

It also seems like the character is turning into a mary sue, where they master every single force power, not taking into account on how long it actually takes to master basic force powers, let alone advanced ones like you say he knows. You might take this the wrong way, but if you can't see why he's not OP I think I will leave with Sep. 

Edit:Force Storms are just fucking broken. Go look at the star wars wikia on why a 21 year old shouldn't have that force power.