What rules are you playing? What will the scenery be like?
I can see the two troops hiding there
I like it, for all the changes I could make would weaken it. Like plasma pistols for articifier armour.
I think you will need powerfists and meltabombs as you can face vehicles and hard models in this points range.
Otherwise I weirdly like it
I think I am meant to ask which codex you are using? As I think if you changed the word fast to troops your list would be a better blood angel army thanks to red thirst.