I would like my own pure Tzeentch daemon build without fate weaver I have the following and can buy more. In light of the new Magnus suplement all advice welcome, especially in regard to army structure and unit size (ideally all discipline of change):

1 Lord of change
18 Screamers
9 Flamers
50 pink horrors
2 Heralds on disc
2 Heralds on foot.