Project priorities

I counted NINE different projects that I'm working on. I've got to make significant progress on several of them this summer!
-Interdisciplinary project. This will end with a poster presentation this summer and won't be part of my dissertation.
-Review paper (hopefully the intro to my dissertation)
-Other manuscript (probably not part of my dissertation)
-Project A (a chapter)
-Project B (another chapter)
-Project C (half a chapter)
-Project D (other half a chapter)
-Database (maybe part of my dissertation)
-Bonus project (not part of my dissertation)
Highest priority (things in the analysis/writing/submitting stages):
Project A
Other manuscript
Review paper
Interdisciplinary project
Project D
The other things (especially the bonus project) can wait. I'll be working on the database this summer too but it's not in the analysis stage yet so I'm just helping the development along. I'm not sure if I should try to tackle these things one at a time, like spend a week working almost totally on the "other manuscript" with a clear goal at the end before I move on to tackle the next big thing? Maybe I'll try that and see how it goes. It would be good to get the closest-to-done manuscripts out the door.