If you are intent on leveling up the level 14 mage, I see two ways to achieve it.

1. Account A linked via RAF to new Account C. Create new character on Account C (will start getting triple xp once he hits level 10). Quest to level 60.

2. Account C and Account D both linked to Account A via RAF. Create two new characters, boost them with your druid on Account A. Use granted levels (30 levels each) to boost your Mage to level 60.

Number 1 will be cheaper but will take longer, Number 2 will be faster but more expensive.

Hope this makes sense