With that much real estate to cover an AIO is the way to go, D151 is a good choice or HD Speed. Also use the Lake Country white polishing pad.
Good luck.
John
You may want to consider investing in a DA polisher and pads. The results will speak for themselves, plus your body will thank you.
Porter Cable, Meguires and Griots are a few choices around $150.
Nice ride, good luck.