That your cancer hasn't spread anywhere else is fantastic news! Hooray!
I think a good doctor will always make it clear what they recommend, but also make it clear that you have a say, a choice. We see a doctor to get help for our condition, so the presumption is that we will take their advice. However ultimately it is always up to the individual how they would like to proceed.
That your doctor is looking into ways to get around your problems with general anaesthetics is excellent. It sounds like you have a really good ally there in your oncologist! It makes a big difference. Most doctors are happy for you to email them some questions. Most of them understand that the amount of new information we're required to absorb is overwhelming.
I'm no doctor and I don't know the details of your cancer (size, grade, stage, agressiveness) but my understanding is they like to start chemo fairly soon in case some random cells have escaped and are looking for somewhere else in your body to settle and multiply. The sooner they can nuke them, the smaller they are and the easier and quicker they are to destroy. But do ask your doctor. You could also ring the BCNA helpline and ask one of the nurses, 1800 500 258.
Let us know how you get on. K xox