Positives of an I/L?

If I had to choose an Arch Mage to go HT, I'd pick Fire/Poison to handle the spawn. Not like either Arch Mage classes are very good attackers anyway and they are both useless at HT.

Without connections, you can't HT as an Arch Mage... sorry but it's time to get your head out of the clouds because I can not imagine any other way for an Arch Mage to be invited to HT. And what if you die? Are you really worth ressing? Even with wheels, there's a good chance you'll die when you respawn.

Anyway, you said you wanted positives?

 Spoiler

Well, there are none! You're not going to make an Arch Mage to once again walk the fun road to 200 right? Why waste your time/meso making another Magician Class? 7bil can easy make an excellent Night Lord and with your Bishop to leech or give Blessing things can't get easier.