[PK]

That should work fine, except that you'll also need to add Malediction. The concept behind Leech is that you are limited by (A) having to make contact with a person and hold onto them tightly or (B) having to win a Quick Contest against them. Since you have given your ability range (via AE instead of Ranged, which I think is certainly fair), you'll need to also add Malediction.

That will create an ability which steals from everyone around him simultaneously, at a penalty to the roll equal to the number of subjects minus 1 (e.g., if there are four people around, the Malediction Leech roll would be his Will-3 versus their Wills.) Add Independent, +70%, if you want to avoid this penalty.

Or, just skip Area Effect and go with Ranged if you want it to leech from the nearest person instead of everyone nearby.

PS: Bumping your own post is generally against board etiquette.