I found out more info in the meantime. But it will still be very difficult to complete this goal this year. I'll probably either have to make it a multi-year goal or slash the level number to a more manageable one. We will see.
So, what I found out. You can increase the max rep conversion rate in 3 ways, beyond the 50 xp/h point:
- via Faith, after level 600 (very difficult for me to reach that)
- via modules that give a % to max rep conversion (they are expensive)
- via guild training
Thanks for sharing your findings!!! I will try to tweak some of those... :)