I wrote a full-length guide, with accompanying videos, for this new flashpoint. Check it out here if you want the simplest ways to defeat the LR-5 Sentinel Droid, Project Sav-rak and Dr. Lorrick.
http://www.rivalsguild.com/2012/04/12/lost-island-hard-mode-flashpoint/
Leave a message here or on the site if you have any questions.