Sleek, try that design using the no set tillering method. Let the condition of the limbs dictate what your draw weight will be. Thin limbs like the one you have will mask set because the tension will pull it back into shape. Let the bow rest for a couple of hours. Then measure the draw weight at about 12" very carefully. Write it down. Now go to full draw and make several pulls at full draw and then go back and measure it at 12" again and see if it is the same. There should be no difference. If there is a difference your design is overstressed. Good learning lesson on bows like this they will teach you a lot about design and material limits.