The aluminum and carbon arrows should weight about the same. Your bow must have a cernten weight arrow and you shouldnt go any lighter ir it will be like dryfireing your bow.
all my arrows weigh with in about 10 grs or each other
I dont know about the maker of your bow but my tenpoint doesnt recomand putting any lube on the servings. They want your to lube the tring it's self and put a few drops of lube on the shooting rail.
I use micro-loin (something like this) oil and put 3 drops on each side of the rail and rub it in, this last for a while