You're under hit cap that's not helping much. Go to askmrrobot.com, load/update your character button, should be default w/ 15% hit and 5273 haste
If you click the Edit weights button it should look like this:
http://i.imgur.com/5HhljBC.png
http://i.imgur.com/WQH2m7K.png
You don't have enough gear to go for 10289 haste yet imo. Stick with 5273 until you get a lot more crit gear. Focus loot rolls on trinkets.
For dotting question, again you'll probably have to refresh 2x per eclipse (make sure to track nature's grace) so you can push the next eclipse without the dots falling off for an extended peroid of time, unless you have bloodlust up you can probably get away with dotting once per eclipse.