If the armor looks too big, simply scale it bit smaller. But IMO, it should be bigger than other armors, as it is in original sprites. This makes the char look more powerful.
The armor is made with 110% scale of normal human.
It should be exactly 110% of human size. Not more, not less.
Comparison with sprite needed.
It seems that APA doesn't looks much worse after reducing number of polygons by 2.
In static only.
Можно хоть до 500 уменьшить, но анимация будет страшнее 100 китайцев
PA has the same polycount and the half of triangles belongs to a helmet.
There's no sense in optimizing PA/APA further. They weights as much as 5 miniguns, but they are much more rarely.
P.S.
Belt pouches blends with pants. I made them green.