Dear Luis,
I read your essay only yesterday, but I really enjoyed it, for the originality and depth of your vision. Tegmark's Mathematical Universe Hypothesis (MUH, since it excludes the uncomputable real numbers (which are almost the totality of the numbers), seems to me after all a particular version of the "It from bit" perspective. Instead your point of view expresses, although in a very concise manner, the depth of Cantor's and Gödel's results, whose implications are perhaps not yet been fully understood.
In 2015 FQXi contest (and before also in a book), I suggested the hypothesis that space and time are sets of (properly ordered) real numbers:
http://fqxi.org/community/forum/topic/2330
Your idea goes even further and extends the mathematical origin to whole reality (including emotions, feelings, moods, etc.). It is not an arbitrary hypothesis (I consider it possible that self-consciousness is a mathematical function, self-referential and uncomputabie), but it is very difficult to verify.
PS: I read in a previous post that you have serious problems of material subsistence, and I'm so sorry for that. I have no academic position. If I had one, or I were, hypothetically, in FQXi Board, I would try every way to help you to continue your research, because I think you deserve it.
Sincerely,