remove the perk in illusion dual casting; from what you've said you'll almost never be dual casting spells (as the only time you'll even have a spell is when you have your sword out). Fire, frost and storm enchanter are arguable. On one hand, you'll hit quite a bit harder if you make use of those elemental enchants. On the other hand, you can take fire enchanter (to boost fiery soul trap, my go to fire enchant) and have the 2 other perks free to place elsewhere. Also, since you never use poisons, I recommend taking both points from the poison branch of alchemy. If you do what I've said so far, you'll have 5 perks free to place. I recommend maxing critical shot in archery (you can crit on top of sneak crits for loads of damage, not to mention the occasional help when not sneaking) and placing the remaining points in fighting stance and 2/3 bladesman or 3/3 bladesman.
White FC: 3439 8353 9339 -- Black 2 FC: 3955 6276 9324 My modest list of event pokemon: http://tinyurl.com/9b83llg