I would absolutely recommend a port. I had a PICC line for five weeks when I was first diagnosed and treated - it was miserable. I had a lot of pain, it was always in the way, it was difficult to shower, I couldn't swim or use the hot tub... the list goes on. I would never consider a PICC line for long-term treatment.
I've had the port for 18 months now - I don't even think about it. Mine does show - I'm skinny. But I'd rather have a lump in my chest than a constant bandage on my arm.