ORIGINAL: Hot Rod Todd
I'd say my all up weight is about 6.2 lbs. I thought the 4120/14 was a better match for this plane than the /18, since I could use 4 or 5 cells instead of 6 or more and spin a 12X8 prop instead of something that has more diameter than I need. If you build this plane with EP, make sure you run the CG farther forward than the plans suggest.
You are correct to get the 4120/14 and not the 18. For me I am not keen to run a 4/5S set up as I am keeping everything to 3s.