2000 wyches and flocks race

As I wrote in my welcomethread I am very new to this game. And with not so much help from my boyfriend or the guys in the club (my choice, as I want to surprise them) iv’e tried to come up with first draft. I want to run wyches as i like the models. And my thoughts about a fast moving army (with flocks of seagulls screening my vehicles in first turn), made me wanna go after something like the list in the spoiler. My goal is to make a list that is fast and still sturdy enough to help not get tabled in turn one by the more experienced players in the club.

right now i've only bought a Wych Cult Shardstorm, Wych Swiftshard and Lelith. Just to get started. But am i totally off with my list and what can i improve before i go banzai and buy the rest.

The list: