1 prayer, obviously.
If you're boxing, 70-50-70 seems a pretty standard setup, as well as 90-70-90 or of course 99-99-99.
If you want a DDS staker, 60-70-1 would probably fair simply enough, since most stakers seem to be pures with 1 defence.
I'd probably go 70-90-1 for a whipper, perhaps with some defence.