Contracts

I currently live in a residence owned by my mother. She accepted an offer in writing to sell the property. She changed her mind about selling it,but the buyer is now suing her for breach of contract. Is she legally bound to sell now? Will a judge make her sell it? Also I am getting ready to renew my lease. If she is forced to sell it, do the new owners have to comply with the lease, including the monthly rent amount?

We recently sold our home and need to be out in 30 days. At the time of signing the contract with the buyer we stated to our realtor that we would need to be flexible on the closing. She agreed, but states we have to be out even though we have not found another place to live. Can we back out on the sale without problems?

I have three apartment complexes that have not given me a check for their property and that is a breach of our contracts. What can I do?

I have been asked by an individual interested in purchasing my house if I will sign a document which states I will agree to give him first oopportunity to purchase my house. I do not plan to sell until I retire in April 2008. I told this party I would agree to give him first opportunity(his parents are my neighbors) however I do not feel comfortable signing a document a year in advance when anything could happen as well as he may not be able to meet my offer on the house. I feel like I will come out on the short end of the stick -so to speak-- Legally-what should I do?

If I want to have a mixed martial arts place where people 18 and over have fights with a signed waiver would be able to have that with out having to go through the courts to get it an okay?