Flying Thursday 4/19: MIA-JFK-NRT (Biz class).

My Mia - JFK (AA 942) flight lands at 10:00am. My JFK-NRT (AA 8495: operated by JAL) departs at 11:30 am.

(I have checked with AA..... and my bags will be checked thru... both flights in 1 PNR)

Questions:
1) What is the best way to get from Terminal 8 to Terminal 1?
2) About how long will that take?
3) I realize I will need to go thru security again. I have TSA pre check. Does JAL (Terminal 1) have a TSA pre check line?
4) With 1.5 hours between flights..... will that be sufficient time to make the transfer?

thanks for all your expert advice.