Looks to me like you would be using:
-2: Itemof Power (+2): It is what it is Armor:1-2
* (-2) Channeling: (Elemental Focus) Better than breath weapon. Same cost for
a much more versitile power (2 free foci slots probably should be used in
item)
* (-1) Inhuman toughness & Inhuman Recovery w/ +3 catch
* (-1) Echos of The Beast (your Element) +1 to perception rolls with the
Element, One trapping that reflects the element (Conviction w might
trappings for earth for instance); empathy w Spiritual Beings of your
element.
Here's a concept that might be cool for the earth character: Stat as above but his form of earth channeling in "Allowmancy" from the mistborn series from Brandon Sanderson (if you havn't read it you are missing out); you could make all the characters Focused practitioners with ancient arts thus giving them promenance in game (and maybe offset the power ranger thing
)