Reasons for a archmage to try for Lv 200?

Okay, I want to make an I/L Arch Mage. I have a level 200 Bishop and everyone thinks it is a waste of my money and time. But, I am looking for the positives here. I want to HT, but there has got to be a way for me to go on an I/L? Right? I don't give a crap about bossing exp. I love mages and I want to train another one. I want to make this arch mage the strongest mage in Windia or pretty damn well close to it. I have 7bil to throw into the char or more. Can someone please give me a reason to do this, and don't tell me the negatives, believe me I know them all I got a 5 hour run down on WHY NOT to make an ice mage. Persuade me to go through with it. I don't want to make a fire yet because I've always wanted an I/L. So please someone give me some help.