Option 1 is easiest, but not much left in city I want to do. Cheap.

Option 2 gets me another view of Mt Fuji from beside ocean. Free housing and probably food (unless I stay out late on purpose). Ticket price unknown.

Option 3 gets me (gasp) socializing a bit, see Will a bit more, and see an area of Japan not visited before. Most expensive probably, 2.5 hrs by Shinkansen to Sendai, another 2 hours to Will's town.(but would prolly stay in Sendai, which means money for hotel)