I have a question, would there be a problem in boosting a character myself to level 8-70 with my mage in tbc classic?
This forum is for technical support on Blizzard’s Classic (ie, legacy) Games such as Diablo II (2000).
World of Warcraft (Retail and Classic / The Burning Crusade) has its own set of forums here: https://eu.forums.blizzard.com/en/wow/. Please use those forums for anything related to WoW.
Good luck in your games !