@Redjay => I see you got the photo done. Sorry I missed your post on how to resize it.
It's easy to resize the photo on an iPhone. Just email to yourself, and then when you hit Send it asks what size you want => Small, Medium, Large, or Actual Size => and the estimated size for each in KB or MB as appropriate.
The photo will be handy, but please up a diagram with dimensions and seating locations with the preferred seat highlighted. The dimensions can be close estimates for now. I find it hard (not impossible - just hard) to believe you are going to use all 38 feet of length for a Home Theater setup only. Are you going projector or a large TV? (This may impact speaker choices.)
A 7.x.4 Atmos setup is going to require quite a bit of cutting into your walls & ceiling to run the cable but it can't be helped at this stage.
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