Looking at the Model motors website,
http://www.modelmotors.cz I see two systems of interest.
#1 4120/18 18 cells 12X8 prop running at 29 amps. 566 watts, weight of motor 11.5 oz., weight of battery 38 oz 2400 mah (29.2 1700 mah)
#2 2820/12 14 cells 10X7 prop running at 33 amps. 500 watts, weight of motor 5.8 oz., weight of battery 29.5 oz 2400 mah (22.7 1700 mah)
#2 would be a lighter system, but #1 would allow upward growth should your weight increase or you want more power.
This would be a starting point. Hope it helps.
John Pursell