Basically I should pick the biggest prop this plane can handle and then find a motor, then get an ESC that can deliver the right amount of power? I was think something like 20C, 1500mah to 2200mah, 3S. But that might be too heavy. For props I have 5x4, 5x4.5, 6x4, 4.75x4.75. Motors I have a selection of 1800kv, 2200kv (inrunner), 3200kv (inrunner), 3500kv, 3800kv, and 5000kv. They're mostly small outrunners and weight about 100g.

Thanks! Here's the specs for my plane. It's a Funjet clone.

Wingspan: 875mm
Length: 700mm
Height: 170mm
Flying Weight: 550g