Thank you for your comments @tachin1 .
As @ColdRoomStudio pointed out, I mixed with my heart and not with my head. Therefore, I accepted some problems to get the feeling I wanted. I find this music really speaks to me and I really wanted to transform what I felt into my mix.
Having said that, you are absolutely right! There are mix problems in there. I have since tried to look at those problem areas and I plan to upload the result shortly.
The problem is that the range 150-400 Hz is very crouded. In order to add something in that area, like kick or base, I have to take something out. Well, as it is already muddy in that area, I should reduce something, anyway. However, I have to be careful, not to loose the feel of the song by doing so.
There is an abundance of cymbals / hi hats in most microphones from the kit, making them rather difficult to handle. At the moment, I am thinking of reducing mainly the room. Lets see if it works.
Thanks for listening!