Then, I realized that it was absolutely awful

Unfortunately, I play on a 360, so I couldn't even mod it!
But, there IS a solution! It will not actually improve the armor, but it will make it combat-worthy!
It's simple and noobly.
Use a permanent enchant glitch to enchant at least three rings with a 10% shield, that is permanently affixed to you. (I use 7 myself, to make the armor actually seem incredible, even when broken!)
This will give you your max of 85 armor on a 360, no problems. The only issue is that the armor has not actually been improved- so it will degrade just as fast, and I swear it dies faster than the Adoring Fan. That's why I use 7 rings, so even when it is broken, it still kicks boat.
Also:
For an incredible arch knight look, do:
ID armor
Escutcheon of Chorrol
Dragonsword (if only the enchantment lasted a little longer D:)
For arrows, wear either ebony or silver. I use arrows of cleansing myself (silver)