RE: Thrust requirement for model
Over my years of building and flying turbine powered models I use the following general rule of thumb:
conventional designs ie : Panther, F84, MB339, Sport planes, T33, P80, F86, Tutor, L1011 etc
0.6 - 1.0 thrust to dry weight
delta configurations / bifurcated / F15, F16, F 5, Eurofighter, Rafale,
1.0 - 1.5 thrust to dry weight
Speed is another thing though...with good flow through ducting some aircraft can attain incredible speeds with smaller thrust engines
ie ARF Bandit ( P70 ).
D.W.