Thats your opinon. Imo they look idiotic as the archmages robes look like a poncho with tassles. As I said I prefer the blue robes that the court mages have. Never mentioned anything about anime
What to say?
I do have better opinions than the rest after all.

The item itself is incredible. They just don't look right on my character. They looked cool on a Dunmer (Savos) but they don't look right on my very high-class wizard type Breton. I like the looks for Novice/Adept robes better for him.
Strange.
I play a Breton, but it looks pretty good on him.
Well, in that case it's best to look for a mod if you are on the PC.
I personally suggest Psijic Monk robes!
What type of enchantment should I use once I reach 100 enchantment on an unenchanted robe to get the 'closest to' enchantment to match the Archmage robes?
Well, the idea of all spell-casting enchantments is to increase number of casts before you run out of magicka.
Now, choose two schools you use the most and enchant your robes with those [name-of-the-school] + magicka regeneration enchantments (you will need 100 Enchanting for this and 5/5 Enchanter, Insightful Enchanter, Corpus Enchanter and Extra Effect perks).
This will give you a nice magicka regeneration and good spellcost decrease.
In the end, not good as Arch-Mages Robes, but still good enough.
You can enchant rest of your gear with various effect to make up for it though (and probably even surpass it).