busy ....get a watt meter its very important.I am learning how to use it effectively to get the most from my lipo batteries.plus you and determine which props are going to be best for the motor you select.at its simplest I fly a timed flight and after each flight measure the wattage to see if I stayed within acceptable limits of the battery pack.the tool pays for itself.I also found it helpful in learning how one poiwer set up was not where it should be.as you get familiar with it it will become one of the most important tools in your electric arsnal.