I've got all datacrons on my first 50, and nearly all of them on my other toons. I got about 20+ datacrons post 1.4 on one of the alts I'm levelling.
Some tips:
-Turn sprint off
-I find spacebar followed quickly by W is better than running and then pressing spacebar, for box-to-box accurate jumps. For loooong jumps I use running then spacebar, holding W
We often do datacrons in teams in our guild. Being able to push/pull team members helps a lot.