Well I started a wood elf for dawnguard, and I want to use magic as I'm gonna be a vampire lord, but I don't know what school would fit in well, my character is a archer(no sneak) any ideas?

how about conjuration? atronachs are always fun. i also always enjoy some good destruction. i usually use spells till me magicka is depleted then switch to weapons while it reacharges. are you playing full on magic with archery as a back up or vica versa? also you can never go wrong with restoration.