The key to this quest is to not use Khem Val. The quest is nearly impossible when using Khem, because he is not effective against either boss. Use Talos Drellik on heal spec for this quest. I tried this quest more than a half dozen times with Khem Val (fully geared) and failed each time. Then I used Talos Drellik (mediocre gear) on heal spec and breezed thru this quest in one try. Talos Drellik is the trick to success on the Visions and Visionaries quest. May the force be with you.

FYI. I believe he was attempting to make a gerund (a/k/a present participle) out of the word experience (a noun). Some MMO video game players use the slang "exping" or "grinding."