Reasonable seller terms?

[Matt Engle]

Hey Everyone, My team and I are in the negotiation stages of a 126 unit apartment deal and the seller is asking for the following conditions: 1. The purchase price is to be firm as the seller is not interested in re-trading the deal in the future. 2. The seller would like to add a 21-day financing contingency in the LOI. 3. Closing on or ‪before December 14, 2018‬. 4. The buyer is responsible for any title insurance. Are these reasonable requests and can they be met for a property of this size? Any and all advice is greatly appreciated. Thanks!