Xps insulation basement wall / Discussions

...basement is unfinished and any moisture could easily dry to the inside.  Now I’m looking to finish a portion of the basement and I don’t want to cause any problems by trapping moisture. I’m planning on putting 2” of XPS against the foundation and framing an interior wall inside of that.  Option 1 is to piece the XPS to...

...wall (to be relocated in a new stud wall later) to make room for the new insulation process. From the block wall inwards I am considering the following sequence of materials:  6 mil Poly against the wall for moisture and radon protection, 2" rigid XPS foam board insulation held in place with the special plastic pegs (s...