Sir, I will now proceed to autistically screech at you how anything beyond 1.7 is heresy.
Please, it's hard enough to find mods for 1.12.2, let alone 1.7.10. I wish I could abandon Optifine completely in 1.12.2 but there are no other mods that add shader support or custom entity models, and anything that exists is made for the newest versions and is being refused to be backported. Unless the GT:NH crew backports absolutely everything from 1.8-1.20 modding to 1.7.10, 1.12.2 will remain the top dog.
Anyway, I've went back to GregTech, messed around with the mod selection a bit, so for example I threw out OptiFine because it's shit even on 1.12.2 and no one bothered to backport it's replacements so, tough shit, and right now I'm slowly creeping up to getting kanthal coils for my pyrolysis ovens as I try to replace the old bronze boilers that are my primary form of power generation to steel ones. I'm on the very beginning of HV era right now, managed to get the HV assembler and SMD components, but my main issue still remains the power generation. I have no idea how to scale oil processing and power generation to be the perpetuum mobile that I'm so used to with the steam power so I'm sticking to that, we'll see if I'll manage to scale it for HV's demand.
I'm still unsure if I want four hatches on a cojoined two boiler multiblock or have four hatches for each boiler. I probably should upgrade those to MV ones, I
think that'll improve throughput to meet up with the demand but we'll see. I'm still crafting absolutely everything by hand and I don't have an automated processing plant for the most crucial things at this point like polyethylene, so, yeah, fun. I'll really have to mess around in creative to see what would work best.
Yes I unfortunately got into GregTech if you couldn't tell. For some reason I never managed to get into Factorio yet here I am continuing to push on forward in this crafting hell mod. Maybe it's because Minecraft is more tolerant of my lack of ability to automate things.