To check each addons memory usage I recommend you to use the Ace addon...
Warmup :
http://www.wowinterface.com/download...fo.php?id=4939
I just took a quick glance at your Log to see what addons you where using, and I havent read it thuroughly but the addons I noticed that uses more memory than other is...
KCItems <-- this one we all need
CTRaidAssist <-- this one to
CTRaidtracker <-- Only Raid management needs this one and I belive that this can use up more and more memory if you dont clear out the old raids you have attended.
LootTracker <-- Dont know how big this item database can become nor it impact on memory usage, but it might become large in the same way as CTRaidTracker if the DB isn't purged.