Jr Pass

hi

i would like to check again if i and my wife can use the pass for these 3 places as i will there for 9 days

from

1)narita airport to Tokyo station (Yaesu Exit) bus or train?

2)Tokyo station (Yaesu Exit) to Kawaguchiko station back and fro by bus

2)Tokyo station (Yaesu Exit) to Shin Osaka
which is the fastest shinkansen to use and do i have to make reservation when i arrive on Day 1