How do I put an offer on this eight figure deal?!

[Tosin O.]

There is a $10,500,000 land area for sale in a very busy and populated downtown area of the east coast that I am about to put an offer on. I have given them pof and now I need to figure out how much below asking I'm going to offer. This is my first multi million dollar deal and it's a bit nerve racking. My plan is to build a 15 story luxury residential condo tower. What concessions should I ask for if I am going to crowd fund the money from my private equity networks?