It would be not unlike Luther's Table Talk, or works by such thinkers as Marcus Aurelius, Pascal or Montaigne, but with a warmer, more folksy appeal. You might well ask how this Arabism appears here. My late teacher Moshe Held used to get very angry when people used Arabic to explicate items in Ugaritic or other North-West semitic areas. He felt, with some justification, that Semitic scholars have a preoccupation with Arabic on account of its archaic character. But I believe nonetheless that Arabic preserves forms which may well have lingered underground in other parts of the Semitic world.
Languages often contain unsuspected survivals of earlier usage, particularly in dialect situations.
So that is my tentative contribution, for what it is worth. R.N. Whybray published a little book on Kohelet in which he skillfully sums up the opinions on the book, and I would recommend this to you as a reasonable, even-handed approach. In this book the attempt has been made to do justice to these conflicting views. It is, perhaps, permissible to end with a personal view. And, at the same time, he was seeking truth for himself.