I need help with my Contracts analysis assignment. here is the assignment.

1. Bob Byer and Cindy Cellar are old friends. Bob has wanted to buy Cindy's downtown loft for years, but Cindy has always insisted that Bob was too cheap. Bob visits Cindy one day and they joke about how cheap Bob is and how greedy Cindy is. They then proceed to sit down, pull out cucumber sandwiches and a bottle of wine and start eating, drinking and discussing the loft. They write on a napkin that Cindy will sell the loft to Bob for $500,000, the deal to be closed in 30 days after title work and an inspection have been completed. Bob and Cindy both sign the napkin.
   1. Fully discuss each of the essential elements of a contract in analyzing this fact situation. Make sure to defineor explain the element or part of the element, in addition to applying the facts to it.
2. (20pts)Agreement (include offer, acceptance, serious intention. Define each part)

1. (10pts)Consideration

1. (10pts)Capacity

1. (10pts)Legality

1. (5pts)Is there a contract in this case? Yes or No

1. At the completion of signing the napkin, what is the status of the contract? Discuss bilateral vs. unilateral;executed vs. executory; valid, void, voidable or unenforceable. (Explain each term then tell me which of the options apply to this case (5pts for each of the 8 listed terms)).

1. (10pts)Does the napkin (writing) have any significance?