When I get confused I do plans like this, like one would do if one's life were a business and I would look at these three different types of sessions and see which one is giving you the most bang for the buck and then just do that one kind. Personally, I'd do the 90 minute session (what I had for 9 years only it was 100 minutes). #2 I would do with self-help books of some sort and I'd start writing letters for number 3 but not "discuss" back and forth (did that too, wrote to my T's business address and just assumed she read what I mailed her and that was enough for me). Eventually I only did the in-person work as that is really all we have in life, people face-to-face, the rest is pretty much our imagination and illusion/not possible to do reality checking on in space and time.