I drafted up a concept and need some Alpha-Readers

I am looking for people who would read a concept draft of mine and give feedback. I basically just want to throw a bunch of elements, characters, worldbuilding at the wall and see what sticks. It would be a coherent narrative text roughly 5k words long and would just require you to answer a few questions and add any comments or notes you would have. The feedback could be as broad or as specific as you'd want and on anything, be it narration style, worldbuilding, elements, characters, etc. Anything, really. I am going onto wholly unfamiliar territory with this text. The genre is portal fantasy and the final work would be a travel adventure.
This would be like beta-reading but even before that, I haven't decided on many significant elements of the story (or whether to write it at all).
I cannot offer compensation.