In a hypothetical world where I get all the possible stars in every hack, i'd have to play through the full first floor before I even got to the new ones. Once again, I imagine you can get 114 stars.
Both new stars in this hack share a star ID, so even though there's two, you can only obtain "one". If it isn't clear, i'm no SM64 God, so I die a few times. You can already tell an improvement over the first hack already, just due to the fact that there's more than just solid ground and red coins.
Link: romhacking.com/hack/flat-lava...