As you know the lip’s size, angle, and shape are decisive to the lure’s action.  Every lure body is different and needs different measures.  It’s hard to just give you an answer.  It’s something you’ll have to experiment with until you get what you like.  I get my lips here http://www.mooreslures.com/  I’d get a few sizes and shapes and then play with the angle and weighting until you get it right.  Besides, if I was able to just tell you, wouldn’t that take all the fun out of it? lol