I looked it up and it honestly looks really fun. I've never played a major modpack like this before, so having to relearn simple things like where to find soul sand would be a fun challenge. It requires Minecraft Java to play these mods correct? I think I have it... I mostly played the Bedrock edition because then my wife could play with me on our Xbox One.
Yes, it's for Minecraft Java, but I'm pretty sure that's included in the regular Minecraft launcher on PC.
One of the things I really like about this modpack is that it's probably the best documented modpack I've played. Oftentimes when playing a modpack I'm spending as much time on a wiki as I am actually playing the game, but this modpack has a lot of useful information on the quest pages, plus you can always get the manual for the specific mod you're working with. Though it probably does help that I'm already somewhat familiar with a lot of the mods and with Minecraft mods in general.
As for my power problems, it turned out that the generator I made isn't really suited for burning fuel, but it generates power passively when surrounded by lava. I made a new generator that specifically runs on fuel and only needed a couple pieces of coal to get enough power.
Of course once I reached the next chicken tier, I immediately wanted to upgrade again, but now I need something to crush crystals. I could use a mill stone, but that requires a multi-block setup that uses actual kinetic energy, including gears and pistons. I could use a single powered machine, but that requires plastic which is proving to be really slow to get. So instead I'm going to summon and bind a spirit to crush stuff for me.
I really enjoy having so many options to reach the same result. And I'm probably going to get into the other mods I didn't choose this time because they do something else easier or better, so it gives a lot of variety as well.