First mega build help

So I know this is asking for a lot, but me and my friends had this Minecraft world that we played on all the time, but like any other Minecraft world, we moved on from it. But I didn’t. I wanted to build a ginormous nearly 250’000 mausoleum, thing is, it’s just me. By myself. While school is going on. And plus I have like 6 other projects that I want done, so in short, I was wondering if anyone is insane enough to help build this thing for me