Welcome @Kwarb to this very supportive site. There is a lot of information here so perhaps join the two private groups:
https://onlinenetwork.bcna.org.au/group/1-choosing-breast-reconstructionhttps://onlinenetwork.bcna.org.au/group/29-flat-chat-no-breast-reconstructionA few things to think about are whether you are happy to have an implant, whether you would prefer to use your own fat (if you have sufficient), if you would miss having two breasts, and whether you feel you would prefer to be 'flat and fabulous'. It is not an easy decision so don't be rushed into it.
Depending on circumstances you may be able to make the reconstruction decision later.
Read up a bit and make a list of questions for your specialist. All the best.