anyone interested in these topics...

philosophy of religion, phenomenology, Thomism, philosophical theology...?

These topics come as an add-on with the subject-matter of my master's thesis, Umberto Eco's novel The Name Of The Rose. So, yes, to some extent. And - if you haven't read that book, you should, precisely all you listed and in an enjoyable form!

Yes, I need to read everything in these fields before I even apply for PhD programs.

mrlanger: Is that even possible? Those 4 fields are pretty big.

That's what I'm reading right now! (although, er, I can't get past the prologue. I have a manuscript due soon.)

Yes, but when? . . . .

Tangentially. I am currently working on a Masters of Education, but I will return to Archaeology, and my focus is on the archaeology of religion (specifically pre-Christian Northern Europe)