Test Army - Toad Hall Leagues

A testing game of my potential league army is coming up this weekend, the current thoughts for it, without giving away the tactics behind the army, is looking like this:

Wraith Witch Deneghra

>Deathripper

>Nightmare

>Skarlock Thrall

Bane Knights (Leader and 5 Grunts)

Blackbane's Ghost Raiders (Leader and 5 Grunts)

Machine Wraith

Machine Wraith

Machine Wraith

Pistol Wraith

Pistol Wraith

Warwitch Siren

Warwitch Siren

There are a few alternatives im thinking about as well, but it will depend on wether 1 arcnode is sufficient, or if I should really bring two. I could also drop the Skarlock and Warwitch Siren (one of them) for full Bane Knights, which would increase their effectiveness - but since we are playing scenarios, killing enemy heavies is not the highest priority... or is it?