Root ALCATEL ONETOUCH Pixi 7 9006w

I got tmobiles free the ALCATEL ONETOUCH Pixi 7.I know thats its only 8gb but half of it is taken up buy the rom at the bloat ware and what evet. So , i want to root it so I can get the stock adroid on it. So it does not have all the extra stuff. It runs andoird 5.0.2

I also want to be able to still want to use 4g lte

Thank you for your time
~MattiWolf