demo build questionFollow

Have been demo spec'd since I first rolled my lock and have loved the ease of it; yes I know that affliction is supposedly the better way to lvl for the first 30 or so lvls, but since I already had a high lvl hunter I looked at locks simply as cloth wearing hunters.

Anyways, at lvl 68 and need to tweak my spec just a bit. Don't plan to do much raiding since I'm a fairly casual player and only use my lock to farm mats for various enchants or for profession items so I plan on staying demo just for the simple ease.

Here's my link http://www.worldofwarcraft.com/info/classes/warlock/talents.html?0500210000000000000002050030133250103501351505000000000000000000