You can use the Tacon 46 with a 5s 13X6 prop for about 7 pounds of thrust. Upping the prop to 13x8 puts you just over the amp rating of the motor but thrust goes up to 9 pounds.
The calc program is close. I have tested the setups with a watt meter and found the result to be around the 10% mark or so.
Here is the calc program
http://www.s4a.ch/eflight/motorcalc_e.htm
Motor
http://www.hobbypartz.com/96m605-big...020-670kv.html
Buzz.