In the first phase, the platform will be rectangular and stop just behind where the main seating is to start. Since the seating drawn in the plan is custom and still unknown I've delayed it till phase II. Since the platform hugs and warps around the seating this last part of the platform will have to wait till then ... so,

In phase 1, I'll have a temporary couch and depending on what the carpet guys tell me I'll either put in some cheap temporary carpeting or carpeting I can extend later.

Anyway there is time ... After all the ceiling wallboard is up I'm gonna have to add shims for most of the clips on the walls as the studs are not lined up perfectly and some are bowed. Some of these shim will need to be as much as 3/4" thick ... that's pretty bad. It's an extreme example of the first guy in causing next big headaches ... and the owner (your's truly) a lot of money.