I haven't heard anywhere that it makes a difference what order you take the pills, and my pharmacist, who I see daily at work, has never mentioned it either.
I take finasteride, sprio, and estradiol when I wake up, estadiol and spiro at lunch, estadiol when I get home and a 4th estradiol when I go to sleep for the night. I hope to get my medroxy switched to prometrium and my estradiol switch to the injectibles this coming Tuesday.