This is if you have some kind hearted soul to level you or you have friends. Preferably a lvl 50 Keeper Staff Mage.

You'll probably get to stand on your own feet once you reach level 45 where all the Thoth/Isis gears are cheap.

Level 1-20 Balefort ( Either Hidden Passage 4 or run through all the maps from level 1)
level 21-26 Ao1 ( run through all the maps)
Level 27-46 Ao2 (plasma pyramids)
level 46-50 Ao3 ( Crush the Keeper. Map 2)

I'll include the estimated time as well for the above

level 1-20 - 2 hours
level 21-26 - 2 hours
level 27-46 - 5-6 hours
level 46-50 - 7 to 8 hours with exp potion
14-16 hours without potion

These are empirical numbers which i have recorded myself. Thanks to my good friends.