VCB, you will get a 1000 answers to this question, and 900 of them are correct. Stabs are so dependent on your bow set up, that there is no magical formula. Take your bow you are going to shoot, set it up with sights, quiver and then go to the archery shop. You need to experiment with different lengths and weight and use the one that most helps your sight steady during your shot.
Basic rule for hunting, stay at 8" to 12" out front and 6" to 10" out the side. I would not try v-bars on a hunting set up if you shoot a bow mounted quiver. The stabs are there to make your sight picture as steady as possible. One ounce here in front or on the side can make a huge difference in how your bow holds.
I run front and side B-Stingers on my hunting rig. I only did this after experimenting. I had a better hold and sight picture with the side bar than without, so I shoot the side bar. Ultimately your goal is to be as accurate as possible with your given set up and stabs are a big part of fine tuning your set up.