Just a piece of completely unsolicited advice from someone experienced in industry, if you are considering taking over a multi million dollar stalled project, especially in today’s economic environment, asking a general forum what they’d consider fair rent is not the best or most advisable way to do due diligence before spending your or your investors capital.
I would recommend a whole lot deeper level of due diligence, comp analysis, speaking with those in industry in the market and contractors, financiers, among many other layers of due diligence.
Taking on more than one can handle is one of the reasons projects like this stall in the first place and are left vacant or in judicial sale.
Just my free advisory services for the day.