Okay. The scales are all ready to lace. I actually sanded off the rough edges left from the shears, and hand-polished each one. The backing is the saffron-colored goat leather below it. The paper is the actual area covered by the scales. The extra portion left at top is for spaulder when they arrive and are modified.
Which would make scale also one of the heavier types of armour, in contrast to mail and plate where thickness is evenly spread. Since armour is only as good as the protection its weakest spots can provide, this mountain armour is relatively unefficient. A simple case of logic.
It is hard to find extant examples of hexagonal scale armour. The closest I could find to your proposal is this Mongolian piece but the lacing is pretty crude and the plates look to be sloppy. I think your central-hole design will hold the plates together more tightly and keep them properly aligned.
Spaulders came in from India (everything is a roll of the dice with the re-enactment products) and they would be large on Paul Bunyan! Oh well.. If I can't make them work, I can just make a version without them, as they are also shown. Description said they were 9" tall --they are more like 12" -13" tall and cover whole upper arm.