You can cast duel weapons with Conjuration just put -Bound Sword- in both hands and cast with each, and you will have a sword in each hand. Bound Bow is a good spell becouse you never have to worry about arrows, on the other hand i dont think it does as much damage as a deadric or dragon bow ( dont quote me on that lol ) but what i would do is put most of my points into 1h,stealth,archery,conjuration, and alchemy could be good for the poisons and all. I usually tell people to put most of their base points into health, and ill tell you to do the same, i would put just enough into magic so you could cast all the bound spells, but then there are some spells you get from Dawnguard that are really fun, but they are magic heavy. I actually did most of this on one of my characters but i didnt do any magic just rolled with a dagger and bow, sneak and all that but i did grab Lycanthropy just if things got a bit hairy....see what i did there.....anyway hope this helps.