First of all if you need help from his family - tell them. Sending out an 'Amazon registry' isn't enough.
However, if you don't want them involved with you or the baby after s/he is born it is unwise to ask them for financial help now. You need to decide what you want now and in the long term.
If you find it stressful speaking to your boyfriend over the phone, visit if you can and write letters to him. Writing is a much better way of communicating because you will have time to think about what to say and how to say it.
If you and your boyfriend can't agree custody and visitation rights he can go the court to let them sort it out once his paternity has been established. Far better to do it between you.
His parents can also ask the court for visitation rights once the baby is born.
Now is the time for you to think about the future and decide what is best for your baby long term. It is no longer about what you want, the baby has to come first.