Level 1 Dec ‘09 - Schweser videos, Qbank, limited use of Schweser notes. Read ethics from CFAI.
Level II Jun ‘10 - Schweser videos, Qbank, read most of Schweser notes. Read ethics from CFAI, did a smattering of CFAI EOCs.
Level III Jun ‘11 - Schweser videos, Qbank, read most of Schwser notes. Read ethics from CFAI, read perhaps two or three sections from CFAI, did some CFAI EOCs as well.
All told, I’d be surprised if I read 150 pages of CFAI material, but that doesn’t include ethics. EOC Questions were helpful as their phrasing is harder.
It’s worth pointing out that I put a TON of time in using my methods.
Level I

robably 2-3 hours, 3 or 4 weekdays everyday after work, as well as usually another 6 hours on the weekend.
Level II: 2-3 hrs per day after work for 3 or 4 days during the week. Usually got another 8 hrs on weekends. Also got up at 5:30 AM 3 days/week and studied before work for an hour or so.
Level III same as level II - “brutal” study mode.