Mariecutie's strategy is a sound one. But its harder to gauge when the split of lsat gpa is difficult--say for instance, you have a low gpa but a high lsat, or vice versa. If this is the case, you want to apply to lots of schools because their 75/25 numbers are not going to be any help. I don't know what your numbers are, so it is hard to really give you advice.
Hope that makes sense.