Recent travels and other travails (dental work) have scattered my thoughts to the four winds, so let me just document a few bits from my current state of mind in case I can get back to it someday.
Here is the figure I drew to illustrate a recurring theme from Peirce.
Normative science rests largely on phenomenology and on mathematics;
metaphysics on phenomenology and on normative science.
— Charles Sanders Peirce, Collected Papers, CP 1.186 (1903)
Syllabus : Classification of Sciences (CP 1.180–202, G-1903-2b)
Here are a few additional resources that I find useful by way of establishing a foothold on these shores.