Why not just rebuild the Ralph the Right Way. They could do half of the stadium a year.
You already have, the road system setup, the land so no one has their land stole from them for pennies on the dollar, electric, sewers, water drainage already, no environmental studies needed, no goverment where to put stadium decisions (which takes forever) Enviromental friendly.
If new stadium is built off site than what do you do with current property which pays no taxes, and new stadium site will pay no taxes.
Re-habed stadiums, Packers, Bears, and now Chiefs.