Hi,
Here are my 2 cents. First, it is easier to build a heli than a plane. In fact, you do not build a heli, you assemble it. It is more like a lego set. No gluing, alingment issue CG problems (usualy). Be realy carefull when doing links, the manual gives you approxiate dimentions taht will require twiking on your part.
If you have build planes before you have almost everything. Here is the strict minimum.
Good set of HEX tools,
machined not forged http://www.greathobbies.com/producti...rod_id=TTT1103
Ball link plier
http://www.greathobbies.com/producti...od_id=HMXR4858
blade balancer
http://www.greathobbies.com/producti...od_id=AGNH1004
Digital caliper (any make will do, arround 17$)
http://www.deeteeenterprises.com/pro...1&cat=0&page=1
Last but not least read here
http://www.helifreak.com/index.php