You should also get the 'Fortify Smithing' enchantment and enchant a piece of armor and gauntlets (the only armor pieces that will accept the enchantment) and Necklace/Ring too, to wear when improving anything to get that little extra out of them. A high Enchanting skill helps with this because the higher the skill the better the buff enchanted on the pieces. Try to have Enchanters Elixirs as well, to push the enchament even higher.
Ebony Armor w/Fortify Smithing 38%
Ebony Gauntlets w/Fortify Smithing 38%
Silver Necklace w/Fortify Smithing 38%
Silver Ring w/Fortify Smithing 38%
Blacksmiths Elixirs help too. Wear armor, drink potion, improve items.
This way you can push the improvements past normal limits.
For example: an Armor Rating of 850(I think, could be 750) is 80% damage reduction.
My Armor rating is over 1100.
Have fun smithing hundreds of Iron Daggers and enchanting useless minor buffs on those Daggers and jewellery