We went with the Scorpion 4020-12 motor, a 100amp ESC, and two 4,000mAh 11.1 batteries = 22.2 volts.
Test flights have been with a 12x8 APC electric prop (I broke the 12x10 on a botched take-off). Test flights have been limited to 5-6 minutes (not wanting to push things too much) and have been hampered with some other issues (retract problems, bad switch and then a bad elevator servo).
It's still fast
, no smoke (yet[X(]) but it sounds COOL
as it's more jet-like than the 2-cysle glow engine was.
House construction has limited flying / testing time. But the fun continues! Thanks for all the suggestions and help.