I am the proud owner of Harmony prototype kit number 2.
What you are also not considering in the Harmony Kit price is the wing jig that is laser cut to ensure proper alignment, and also the fuse jig, the stab jigs vertical and horizontal. the kit also comes with the sheeting laser cut for the wings for proper alignment etc.
I can tell you that if you are looking for a kit the Pentathlon is a great kit and goes together easily. I have yet to see a Pentathlon not make weight with any power system.
There are passport build threads in the Electric section from Todd Blose I believe.
Good luck and welcome to pattern!
Chuck Hochhalter
Insight RC V2
Pentathalon V1
Pentathlon V2
Pentathlon EVO
Harmony Proto 2