The beginning was always going to be the most incomprehensible part and only as things progress will the scale of things fall into place (donít get me wrong, it would probably still be a demanding feat of visualisation, but what the hell, I donít believe in pampering readers
This is your problem, I feel. You cannot afford to allow the beginning of your book to be incomprehensible. If anything, those opening chapters have to be the best in the book.
Your piece is well written and you clearly have few difficulties when it comes to self expression. Good stuff - that immediately puts you several steps ahead of most other aspiring writers. But, to me, it reads like an unappetising cross between The Silmarillion
and William Blake on one of his more esoteric days. Put simply - there's no story. Nothing to grab the reader.
Tolkien knew this. That's why he started off with workshy hobbits stuffing their faces and left the hardline stuff like The Silmarillion
If the plot requires you to cover the metaphysical, I'd leave it until after chapter 3. Get the story moving and then bring in the background once your readers are well and truly on board and have merrily suspended their disbelief. Give them bread and circuses before you make them do some work.