working with: 0th: all, 1st: 9, 2nd: 4, 3rd: 4, 4th: 4, 5th: 4, 6th: 4, 7th: 4
(using only 3.5 PHb, no Gear, no xp for Permanency, and in a Dungeon setting)
hrmm..
To get the most "bang for your buck" and be both versitile and useful over a 24hr period if need be I suggest:
0th: 4 = Detect...