Hey.
First of all, i wanted to say thank you for all those new mods. I was looking for some more spicy way to play through K2. so with Tungsten, Titanium and Lead from Breven and all Your's mods i am sitting at blue science and i have a lot of fun without complicating my game too much.
I wanted to say that having Nylon as red belt's ingredients is little far far away in tech tree. You need to unlock blue science to get atmosphere condensers to get nitrogen to complete Nylon crafting chain to get Nylon to get red belts. I am able to get steel furnaces, fast inserters and trains much earlier. I also dont know why you have put red logistic tech so early if it's still locked behind blue science. I would consider changing red belt recipes to some other stuff because changing how nylon works would me much more complicated than just changing recipe. But still, a very good work with all the metals and gases.