2000pts army vs 2x1000pts army

I've got an upcoming battle against 2 friends, myself with a 2k army, my 2 friends with a 1000pt army each.

Below is my army list, would you consider it bad manners to run this list in a friendly game? Or would you be annoying coming up against this?

I'm concious of it being too strong with too many big models for a casual game.

Chaos - Thousand Sons - Grand Coven

Magnus the Red (435pts)

Daemon Prince of Tzeentch with wings (205pts)

Sorcerer (80pts)

Sorcerer in Terminator Armour (105pts)

5x Rubric Marines (100pts)

5x Scarab Occult Terminators (180pts)

10x Tzaangors (70pts)

3x Tzaangor Enlightened (45pts)

2x Chaos Spawn (65pts)

Mutalith Vortex Beast (170pts)

Defiler (250pts)

Forgefiend (130pts)

2x Sekhetar Robots (80pts)

2x Sekhetar Robots (80pts)