My first twinstar had a pair of 25la's on it. It was way underpowered. We have a 400 ft. paved runway and it would use the whole runway just to take off. The climb out was slow. You didnt dare turn it to soon for fear of tipstalling it. Im getting a new one and installing TT 36's on it. It should be airborn in half the runway with this setup. FORGET the 25la's.