[Spaz]

the prop is the most important part of the puzzle here, also are you a "full throttle the whole flight" kinda guy? the largest prop that should be used on a 20-20L is a 10x4.7sf that will put you over 20 amps with good batteries. the 10x3.8sf is a better choice IMO to keep the amps just at or under 20 amps. if you due fly full throttle most of the time use a 9x6E prop