I've managed to get my one-handed abilities to 85 now, and am still dual wielding. I then basically spent my time doing tons of side missions, obtaining and refilling soul gems with the soul trap spell, taking them back, enchanting daggers that I'd also created to get my smithing up.
From there, I found myself with 100 smithin and 100 enchanting, and concentrated every perk on increasing the middle enchanting perk tree (the perks offering stuff like 25% extra effect on enchanting armour etc).
I then realised I had in my inventory both enchanting and blacksmithing potions that increase my abilities by up to 50% for 60 seconds. Next, I disenchanted an amulet I found which gave me the fortify smithing perk, meaning I now have a smithing enchantment.
Once I had everything together, I popped an enchanting boost potion, then frantically used four grand soul gems filled with grand soul (these are essential to get maximum effect on the stuff you're enchanting) to enchant some regular clothing - a shirt, some hide bracers, a necklace and a ring. This made all of them now enchanted with a smithing enchantment that allows stuff to be created 28% better. Put on all the clothes, and you have a 112% increase when you smith weapons and armour.
Phew ... next, I again got all the stuff I needed, and made sure I'd unlocked the Elven smithing perk (allowing them to be made twice as well), and the smithing perk to be able to enchant magic items. I have also maxed out the light armour perks such as wearing a matching set giving an armour rating boost etc.
From here, I popped a blacksmith potion of 50% increase, while wearing all the smithing clothes I'd just made, and used them to create Elven armour (boots, body armour, helmet, bracers etc), two swords for dual wielding and bow. Note, only pop the potion when improving these items - their base levels when making them are the same no matter what you do, but the smithing stuff comes into play when improving them on the grindstone and workbench.
NEXT, I took all these back to the enchantment table. With another bunch of filled grand souls, and another enchanting potion, and the enchanting perk to add two enchantments per item, I enchanted my armour with single handed fortify and archery fortify enchantments, meaning that wearing them gives me a total of 50% stronger one handed attacks and 60% stronger bow attacks. I also enchanted my boots to allow for extra carry weight, meaning my light armour can carry up to 400 now.