A: Yes, you can. Then after the landlord has a certain period time to cure if he does not cure, you’re able to take several including vacating premises.
A: Your questions are certainly valid and you are entitled to answers. And you should receive the information before you sign a settlement agreement. Some of the terms of which should be included in the settlement agreement, such as if there are any other fees or costs associated with the settlement.
A: If the lease does not indicate in writing that it is assignable, without any legal implications, you would need the permission of the landlord/owner. And if agreeable, then they would need to be an assignment of lease.
A: Either the seller or the buyer can prepare a purchase agreement. Like any contract, it can be a standard document that one party uses in the normal course of business or it can be the end result of back-and-forth negotiations.
Most often, the buyer's real estate agent will write up and prepare the purchase agreement for a house. Note that agents (not being practicing attorneys themselves) can't create their own contracts.
In Florida commonly the parties utilize the Florida Realtors/FloridaBar-ASIS-6 Rev. 10/21/2021. That is an example of a approved form.