You should make sure you have the tools necessary to Build an RC helicopter; screw drivers, ball drivers, nut drivers, wrenches, pliers, fuel-filters, addition glow plugs, ball link pliers, and a pitch gauge.

You may also want to see what kind of bolts and screws you will be using so you can purchase additional ones, just in case the kit is missing some, or through mischance one rolls off and goes missing during assembly.