First of all, i would change the Warboss to a Big Mek with KFF.
Use him to give the Kanz a 4+ cover save, which they then obscure the Boyz to give them a 4+ too.
Get more Kanz. The more the better. Max them out at 9 with Rokkits if you can.
You really want all of your Nobz to have Power Klaws. They are a must have.
They will be striking last 95% of the time anyway, and being able to ignore saves and insta-kill T4 characters is well worth the cost.
Use him to give the Kanz a 4+ cover save, which they then obscure the Boyz to give them a 4+ too.
Get more Kanz. The more the better. Max them out at 9 with Rokkits if you can.
You really want all of your Nobz to have Power Klaws. They are a must have.
They will be striking last 95% of the time anyway, and being able to ignore saves and insta-kill T4 characters is well worth the cost.