I would highly recomend a port. Old radiology nurse here and patient.
If you need any CT scans or other testing requiring IV solutions/medications it can be used.
Arm veins easily collapse and bruising easy to happen if no port available.
I just finished chemo and my port was a godsend. also surgery can cause lymph edema, may not be able to use surgical arm for awhile. I had lumpectomy and had swelling for a few months. Port will be SO HELPFUL!! Sending positive strength to you in your journey. You Got this!!
P.S. Ice was my best pain reliever post surgery 😉 lots of it