A lot of this depends on the specifics.

Do you need to be in-office for a full 8+ hours or can you work from the train on WiFi/hotspot and just be in office for like… 6 hours? (That could be the difference between a 6:30am train vs a 8:30am train, and getting home at 6:30pm vs 8:30pm)

Will the dates/times be fairly set and reliable, or will you have to switch it up? (If you buy Amtrak tickets to Trenton you can shave off 30+ min each way. But you would want to buy them far in advance)

Ewing is a little too far from the train station though, so it would make it very complicated. Probably not worth it.