DOn't know if it'd help much, but the muffle effect would probably aid in your sneaking, and I'm sure the Ebony Mail would come in handy.
Enchanting would be a good route to go. Leveling it up is quite easy, just buy all the filled petty soul gems you see for sale and enchant a weapon with something good like turn undead, absorb health or banish to make a return on your petty soul investment. Rinse and repeat.
I know there's a sword in the Blades base that deals extra damage to dragons, but I think it may be 2 handed...