The plot ratio is roughly 5000/(11.2 * 666) = 0.67 (residential land is not that low, is it? )
Judging from the above two indicators, frankly speaking, your land can't make much money. I don't know if your index is wrong.
Even if the land cost is 2500 yuan/square meter and the direct cost is 5524 yuan, then your house price is 1000 yuan, otherwise your project is meaningless.