You are over-propped. According to the spec on Hobbyking we site the biggest prop that motor can handle on 4s is 4.5 x 4.5. Any bigger is sure to exceed the motors max amps and power. Sure this will yield some impressive amp and watt numbers but most of that extra power goes to making heat.
You should put a wattmeter on it to take the guesswork out.
FWIW the 2200mAh, 4s battery appears to be FAR too big and heavy for the Radjet. Most 4s users are running batteries around 1000mAh. I'm surprised you can even fit it in.