I sterilized my sons bottles till he was about 6 months then just washed them in hot water after that.

I hired a Madela electric breast pump from our local chemist. This may be a cheaper option for you to check it out and see if you like it. I found the electric pump great. I could just sit and watch TV and let the machine do all the work. I would recommend giving it a go. I think a lot of chemists hire them out. learning to BF can be stressfull enough when it is your first time.