Prestige Class Jedi Insurgency

So while I plunk away at chapter 2 (5k written so far) I thought up some prestige classes for when the MC eventually hits level 15. I'm going to pick what I'm going to pick, but I'm curious what you guys think. Here are the options:

Sith Assassin: You easily grasp the weak points of any person, building, or starship. Wielding explosives and poisons comes naturally to you. You are difficult to track through the Force. Grants the ability to become invisible at any time. 

Sith Marauder: You have the stamina of a dozen mules, and double your current strength. Armor restrictions no longer apply to you. Grants the ability: Sith Rage: temporarily tripling Str, Dex, Con while also losing an equal amount of Intelligence and Wisdom for the duration of the ability. 

Sith Sorcerer: You can see the unseen, feel the currents of that which is hidden. Whispers of ancient artifacts long forgotten sing to you, cursed texts that would trap your mind forever promise forbidden knowledge, and ghosts wish to instruct and possess you. The subtle thrum of the universe pulses in your veins, you can feel it on your fingertips, but can you grasp it? All magics can now be studied, and given enough effort, understood. Grants ability: Sith Lightning: red colored, Force Lightning that slowly tortures victims, draining them of their life force to fuel spells.

Jedi Shadow: You can sense the darkness lurking in the people around you, their hearts and any deceit are laid bare before your eyes. You can pull upon the Dark Side of the Force without becoming corrupted yourself. There is no penalty for casting Dark Side abilities, and you can siphon the darkness out of others. You are difficult to track through the Force. Grants the ability to turn invisible at any time. 

Jedi Weapons Master: You easily grasp the forms of saber combat. Whether it is wielding one blade, two blades, or a dual blade, none seem difficult in your hands. They are to you, no more difficult to learn, than a child learning to ride a bike. As a Weapon Master, you have realized that your body is the greatest weapon. Grants the ability: Force Punch: coat your hands/body in the Force, and tear apart metal as if it were made of paper. 

Jedi Scholar: You have a perfect memory, and a great insight into learning. Skills that do not require the Force such as: math, language, history, art, engineering, mechanics, physics, chemistry, biology, they all come naturally to you. Grants the ability: Translate: you can decipher anything. Whether it be a spoken language, text, or even the subtle sway of body language. There is nothing you cannot uncover.