Celtic Heroes

So I really do not have a lot of free time on my hands as of revision reason. But planning to play for a fair deal of time as I have spare hours on my hands a few days. So my question is how long would it take for a level 82 Rogue to get lets say 120 and same for warrior and rogue as i usually get my alt to 80 get bored and create a new one and do the same yeah i know. Estimates welcome and math geneious or even charts! Hope a get a reply!

Oh yeah forgot to mention got warden and herioc ammy and I knw good solo builds!

1 elixir= about 1 lvl until 100.
2 elixir= about 1 lvl until 110-120.
Recommend multi-devicing or get a friend to help