RE: First Build
At this point in your build, your wing looks good so I say you go with 3 channels and save the ailerons for the next build. It would suck to ruin the wing trying to cut ailerons if you are not exactly sure of the plan. Good looking airplane and I;m interested to here about your 1st flights. Worry about side thrust later. It is as simple as adding washers between your eng. mount and firewall. Good luck!
Crasher