I concur as well.
As far as 6S vs 12S power: I mean, the 6S setup has a lot of guts already, 12S would be a rocketship. I have no problem going full throttle right into a violent crankshaft and getting the airplane to spin around 5-6 times. With more power/speed I'd imagine you might run into structural issues- the airframe is built relatively light and the plywood is thin in certain areas. With enough speed/power going into a crankshaft for example, you might find yourself having to do the walk of shame and go out to pickup the pieces....... Which of course is something none of us want, we want to have the demise of our airplanes be because of a dumb thumb, not a structural failure. As sinister and asinine as that sounds, it really does reign true. I don't want my airplane to die because the firewall rips apart or the fuselage breaks, I want it to die because I made a mistake and put it in under my own control. Not that I make many mistakes....
So to those wanting to go for 12S: I say go for it, just be wise about your throttle management. This is a really light airplane and with 2500 watts+ yanking it around the sky you can start to test the limits of the airframes design.