ltc,

5000mah should quite a bit more than enough to fly the Sportsman sequence (1 sequence). Your mah usage will be influenced by many things - speed, wind, weight, how hard you throttle, prop, etc. So it is pretty hard to say how much capacity you need to fly a given sequence. Maybe other Sportsman flyers can chime in here with what they are using, what motor/prop and plane, to give you an idea of what is used for that sequence.

Woodie