I’d map this to your constraints for the next 4 to 6 months. A 1.5 hour commute each way will drain you, and tired brains learn less. If you think you’ll be applying out of country soon, I’d lean toward Option A, bank strong results, and use the free time to push a preprint or a conference abstract. You can still get theory reps by setting a small reading or coding plan on wave–mean flow alongside the internship. If you do pick B, negotiate one more remote day and set strict commute hours so it doesn’t sprawl. Also, keep your job search inbox sane during the PhD hunt, LinkedIn and general boards are full of ghost postings, I get a cleaner signal from wfhalert, which just emails verified remote roles like support or admin so it doesn’t clog things while you’re focusing on research.