I have the game mechanics and narrative mostly all planned out and know where I might eventually cut corners or take the easy way out without sacrificing the game's quality (voice work being the most obvious one so far, I'm probably just gonna go with no VA at all).
I only know how to program, but still, I'm hoping for a 4 year dev time while working on it mostly solo after work and learning shit on the fly. I guess I'll see how it goes once I start, I have a terrible habit of drastically underestimating endeavors