Chaos Defiler Conversion / The Walking Warrior

The Defiler (imo) is my favorite chaos model, but I convert'em into nasty walkers that follow my rhino mounted squads. I used to play World Eaters in 4th edition, so I have a six legged Defiler (he's nasty too). But, since the 5th brought forth the Defiler that has fleet, here is my conversion.

 He has a shoulder mounter Battle Cannon - can you Predator? Also, he's got a staff type spiked mace as his CC weapon....

Walking Warrior, if he can survive T1 he'll tear some stuff up...