It is, 2 ESCs (one per motor) on a 5000mah 4S Turnigy Lipo, as for the mixer it's just done on my Giant Cod transmitter, it's one of those £25 ones!

I do have some photos of the circuitry I meant to post a short while ago,
IMG_0427[1].jpgIMG_0425[1].jpg

Sorry about the dreadful quality, but it's the best I can get