Hey Balsa.
I agree, the Phantom is flat out the coolest, wickedest and best looking jet ever. I built one last winter. All I can say is'build light' Mine had completly sheeted wings and robart retracts. covered in silkspan and dope. Weight was around 13 lbs. I had an OS FX .91 in it and it was just good enough. More power would even be better. This plane must have been awful with a .60.
Looked great in the air but landings were very fast.
The fit of the plastic nacelles and canopy were brutal.
Also watch out for nose heavy. I had nearly a pound of lead in the tail to balance it. Put your batteries in the very back, tail cone if possible.
Might consider a pump as well as the engine is a long way from the fuel tank.

Good luck., if this works picts to follow......