Besides MC, DA and haste, I'd also suggest getting some DPS mod. The mastercrafted imbued strength ring is a good start and not that expensive. Then get some nice instanced gear or shard items (shoulders and gloves are pretty good tbh). There are also some decent quest rewards (e.g. the charm slot item from the brokenskull pirate quest line that starts in firmroot). And get your fabled epic.
As for AAs, I'd also spec out of debuffs and cheap shot. Get reach line (and later potency), then put some points in the shadow tree.
This may be obvious, but get your main CAs as A3 version (or M1 if you can get some) and use vitality breach poison. You can also get stun poison, but that's a bit expensive since it's only available as a T7 MC version. Last but not least, as has already been said time your CAs.