The Optima Pro is a good-looking rocket that has all the parts required to get it airborne, but probably not the parts you'd really like for a rocket of this size. In addition to the basic airframe, this builder recommends you get a couple 1010 rail buttons (and invest in the rail launcher if you haven't already), and aramid cord to replace the included shock cords. About 2.5"x40= 100" should be about right. Then it will be ready to fly on higher-power composite rocket motors.