A: This is impossible to answer without a review of the entire contract. 6-8 weeks is pretty vague. There are no doubt other terms of the contract. Any attorney who would say "yes" is letting you, a non attorney, interpret what part of the contract is important and what part is not important. Take the contract to an attorney for review and an informed opinion.
A: You have to either admit or deny each paragraph of the Complaint. You also need to plead any affirmative defenses that you may have. If you are being sued for a debt, I suggest you speak to an attorney experienced in those matters for specific advice. You may have legal defenses that you are not aware of. Please keep in mind that economic hardship is generally not a legal defense to a lawsuit for debt.
A: It sounds like you are separated from her. The only way possible would be to file for "equitable distribution" and the Court could enter an Order requiring her to cooperate with the disposal of any marital assets. Otherwise, you cannot force her to sell. You should get an equitable distribution or separation agreement in place for your own protection.