Sounds like a good deal to me.
Make sure the heads can handle a 880 watt second head. Older heads could only handle 500 watt seconds.
I've used Novatron gear for quite some time, it's ok stuff.
Now, for the down side... If you're planning on using these heads with light modifiers other than umbrellas, it's a slight pain in the butt to attach speed rings to these things. Also, don't plan on using heavy (like 6' tall) softboxes with the standard head. There's nothing to really hold the weight.
If you want to use that sort of stuff, think about getting some bare bulb heads. You'll get better light and easier mounting.