RTF is a global modification that replaces all towns in the game.

It's up to you :)
Feel free to experiment :D

Added 5 minutes later
By the way, here's another idea:
I think it would be good to create Orcish warriors based on Minotaurs.
But there are already Murmillo in Haven. So, I think:
1) Remove Murmillo and create Orcish fighters based on Minotaurs.
2) Move Kensei to level 5.
3) Put Hydras on level 6, but only with a tail and not legs :)