I'm not certain about my build, because I don't know anything about the bonus skill yet.
I was planning on something like this:
Adept
Biotic Mastery/bastion 10
Pull/field 10
Throw/field 10
Singularity/area 10
Warp 1
Bonus skill/unknown 10
Shockwave 0
Now, if the bonus skill isn't all that good, I might end up picking up warp instead and evolving it to the heavy version. I skipped shockwave because I feel it fills the same niche as singularity; it's not saying it's a bad skill (likely on the contrary) but as of now it feels like the
least useful. I just don't have enough points for it, since I can't give up throw, pull or singuarity.
I'm not entirely sure on how to evolve singularity.. I'll have to see how it plays in the game. If I feel it's aoe is large enough already, I might go for duration.
Off-topic: more votes for my poll please! Link in the sig