If the geo doesn't add anything, why keep it? Making good LODs are gonna take a little time, but is great practice in practicality. The left one has 23 tris on the flat side while yours looks the same and has 120 (eye-math) See how those loops are still connected, and still easily reducable?
Right now the unfinished high-poly is at 90k. It may reach 130k as maximum, more or less. My goal is making the low-poly with 20k as max., so I think 2k for the four chains (23 per link) should be enough. This is what I've come up with for the bullet (36 polys I think), and then there would be the connection between the…