I, too, am a WEMT, and am putting together final preparations to embark on a southbound AT through-hike next month. My first aid and bivy kit also weighs close to a pound, and while I may share some of it (blister care, for example) with my brother and hiking partner, I feel obligated to carry most of the weight myself. By becoming a WEMT I feel a certain obligation to care for other, less-prepared hikers I might meet who get into trouble, and I want to have everything my brother and I might need plus a few extra things for unlucky strangers. I wouldn't be able to forgive myself for attempting to help a stranger who had fallen on a hiking pole, for instance, but failing to do so adequately because I had left behind enough povidone iodine to wash the wound, enough clean, sterile gauze to pack it, and enough spare rope or cord to build a litter. Training does matter, and for me it means that while I may be more prepared than many to assess a problem and improvise a solution, it also makes me aware of the many things I'd rather not have to try to improvise on the fly and in a tough situation. Having volunteered as a street EMT, I know that it is so incredibly nerve racking to be faced with a real emergency that it's easy enough to forget where the right, highly specialized items are in your ambulance, much less make them all up at the time.
Summit, I figure you have a somewhat similar rationalization in your gear choice. I commend you for carrying a well-prepared kit, and my only advice would be to carry what you feel comfortable with, no more, no less. You might feel fine carrying only 2 5x9's and cutting them to fit smaller wounds, for instance.
Just my thoughts on medicine in the backcountry.