You are an enchanter, yeah?
If you go mage, you should almost always take enchanting, so that you can wear high level light armor for defense and then enchant each piece of armor with fortify magic. So, it's like having 4 robes with your choice of enchant.
Also, if anyone didn't know, you can buy a dog at the Markrath stables, he can follow you as a companion.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the requisite spine and testicular fortitude to study under me" -Elodin