My feel on an army like this...
You have an over-expensive sorcerer. In a list like this, you should have a small hq... An HQ with a very low point value. With Lash at 500 points, it doesn't even get fun anymore.
Your greater daemon. It's not 100% that you'll get this close. You'll be moving 6" max on all your units.
Your lesser daemons will have to get close, and even when they do get close, that's not very many of them. For daemons to really be useful in a squad, you need them to be more of a swarm.
With Lash, a greater daemon, and minimum squads, this list doesn't even sound fun. It sounds like a list that would win in 500 points, but would really be more.. stupid to play then anything.
Tell your friend to ditch the greater daemon, and maybe even the daemons in this point value. More troops! They're the backbone of your army.