I greatly prefer written communication as it can be looked up later for reference, which should protect both parties from misunderstandings.
I have flexible work hours and very few commitments in my life. I can work during weekends if you need your software delivered urgently.
I am open to both fixed price and hourly rates.
Payment terms are open for discussion, but I ask you to make a SafePay deposit to Guru.com at the beginning of the project.