I have been through the same routine you are starting. With 15 months of treatment and only one arm to use I have found the port great and the nursing staff seem to appreciate how much easier it is to access.
However....I had the port placed the day before my second round of AC. Bad idea...dealing with the difficulties of the vile AC treatment and the new port. I hated it for ages, but it has turned out to be a good idea.
So, it's not too late to decide to get one later, just more annoying.
Good luck with your treatment, it's hard going, but doable.
You sound like you're well supported, Louie