Just bought some Chaos Bikes to add to my Daemon army and thought I'd try them out in a 750 point local tournament next week. Opponents range from ultra-competitive to Dark-Vengeance-plus-a-couple-of-other-boxes. Here's what I'm thinking:
Herald Of Tzeentch with ML3, Paradox & Exalted Reward (probably the Portaglyph) 
12 Pink Horrors 
11 Pink Horrors 
6 Flesh Hounds 
6 Flesh Hounds 
3 Chaos Bikers with 2 Meltaguns and Champion with Combi-melta & Melta Bombs 
3 Chaos Bikers with 2 Flamers 
That's currently running at 746, so 4 points spare. Currently building the bikers, so it's not too late to adjust their load-out. The idea is to have one unit of bikers for vehicles (the melta unit) and one unit for troops (the flamer unit) with the hounds filling in the gaps. Since Daemonic Instability isn't an issue for Daemonkin Fleshhounds, I thought it would be better to have 2 units of 6 rather than 1 unit of 12. I haven't run Chaos Bikers before, so I'm a little unsure of the best loadout for them. I actually have three more and plan to build a second melta unit with those for bigger games. Don't have many other Khorne units, so going full on Daemonkin isn't really practical, but I have plenty of other options for the daemons (particularly Tzeentch and Nurgle), so I'm open to suggestions.
The plan is to be fairly aggressive with the Gorepack and use the Horrors, Herald and Portaglyph to summon stuff, hopefully making use of the Paradox staff to increase my chances of getting those mastery level 3 powers off. Haven't used the new artifacts yet, so would I be better dropping the Paradox, using my Horrors for summoning (how I used to do this since they have less exposure to perils) and spending the extra 25 points on something else?