Hi - I'm Pieter and I do technical support for Armtec's Platon membrane.
Lets start with your walls. Assuming you are going to fame the walls with 2x4s, measure 4" into the room at each end of the room and chalk a line between the 2 points. This becomes the room side of the line your base plate will follow. (I assume it will clear the "U" beams)
Next, cut 2x4s to fit between the "U" beams. These will become your floor plate. Cut some strips of Platon 5" wide and staple the strips, dimples projecting away from the wood, to the underside of the floor plates with the excess width projecting into the room (the drywall will rest on this piece later).
Install the base plate sections following the chalk line and fasten to the concrete floor. (Tapcons or the "nail and solder" method.) Ditto for the ceiling plate, plumb to the floor plate and then toenail (screws are better) the studs into place. If you're using metal studs, screw the lower "U" channel to the wood floor plate.
Do your wiring, insulate (Roxul is my preference) and install a 6 mil vapour barrier before drywalling. After painting (and before you install door frames) you'll be ready for the floor.
With a "click lock" laminate that has an MDF core, you do not need to do an OSB subfloor. You do if you are using vinyl plank (EG - Allure)
You don't need the tarpaper either. Of course, if your floor is really bad, level the low areas with latex modified mortar (Top n Bond works well) before you start the flooring installation.
If your floor has some minor dips, place landscape fabric (weed block) on the concrete first. This will prevent the Platon dimples from clicking on the concrete. Landscape fabric breathes and does not rot. A level floor does not need the fabric.
I ususally work in strip sections - unroll a strip of landscape fabric, cut to length,unroll a strip of Platon over it, cut to length, unroll the "Quietwalk" underpad, cut to length and then install the laminate over that. Keep working in sections until the room is finished.
Then install your door frames and trim (no messy gaps at the doors) and enjoy!
Hope this helps.