I do not believe that ETH could be 10k+ in a month, that would be way too big of an increase to have and I believe that we will probably have something much lower. However 5k could be great, that would be something that I would expect from bitcoin and if that happens then we are doing fine.
When you are expecting something closer like 5k then you could be happy with any increase, when you are expecting something like 10k or 12k then it means you are expecting something much bigger and even 5k which is a new ATH if happens could still be something you are upset about, not really be "upset" but you are disappointed that it is still at half of what you are expecting it to be. Drop your expectations a bit lower and you are going get happy quicker.
I agree that 10k seems like a pipe dream and it will not happen. The bigger chance right now is that we could probably see ETH becoming a bit better but that's all, we should not hope for it to become 10k suddenly. I am not entirely sure about 5k neither, I mean we had a great day and we reached nearly 4.5k so if it keeps up this way then 5k should be very easy, it could reach 6-7k as well if it keeps going up. If bitcoin reaches its ATH then we are going to see ETH reaching 6-7k for sure. However this could also be a dead cat bouncing as well, how would we know which one is which? So all in all I can't guarantee an increase, it is either going to fail to break over 5k, or it could be 7k+.