So Being a 4th level Range, and 4th level Mystic

**Glaive** is Reach weapon so +5 Range

**Guardian Soul**

 - Your size becomes Large, unless you were larger.
 - Your reach increases by 5 feet

**Giant Growth Disciplines**

 - Psychic Focus:While focused on this discipline, your reach increases by 5 feet.

 - Ogre Form your reach increases by 5 feet. If you're smaller than Large, you also become Large for the duration. 

Not sure if this is how it works, But it seems like alot of fun to mess around with if it stacks like this. Even if you can only move 5 feet per turn, 20 range is interesting .

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/GyPLq.png