demon scheming

so with (supposedly) a RTT in orem in january, i think i can actually crank out my demon army in time for it. here are the basic bones of it all:

keeper of secrets (lv 4, siren song, soul hunger, torment blade 625)
herald on steed (bsb, -2 ld banner, allure, torment blade 295)
masque (90)
blue scribes (81)

1000+ in characters. at the moment, i have slaanesh, khorne and tzeentch in the list, but im wondering if i should just go slaanesh/tzeentch. tryin to be less power gamey and all. the problem im running into is 2 fold. for core, i have to have either go horrors (could be construed as cheese) or demonettes (simply crappy). plus i already have 10 bloodletters painted. and fleshhounds are really good. like really good. and fit with the speedy theme im goin for. i just dont think its gonna happen. 3 colors it is.

so im thinkin core:

10 letters, no command
12 horrors, icon of sorcery
12 horrors, icon of sorcery
6 furies

and special:

5 seekers, champ and siren standard
6 fleshhounds

and rare:

fiends. i have flamers, but people really hate them, so i think ill just go 2 units of 2 fiends.

i have access to screamers, mayhaps i should try and work them in, keepin to the heavy tzeentch theme.