Without being able to open your file, I would recommend using a simulator or calculator to get a basic idea of how much power it takes to do a particular thing under particular conditions.
It will let you guesstimate the battery power, controller power, and motor power needed to do the worst-case parts of your rides. You can do this fairly easily with some customizing effort at http://ebikes.ca/tools/simulator.html , as all the parts pre-listed there are for ebike-class stuff, so you have to use the "custom" option for battery, controller, and motor (though you could use the listed cromotor to start guesstimating with).
As for us knowing what is powerful enough for your application, you'd need to state all the specifics of your application (none of which are in your post; don't know if they are in your file), including terrain, road conditions, wind conditions, wheel size, gear ratio from motor to wheel, total vehicle/rider/etc weight, speed and acceleration rate desired, etc.