I have been flying an Isobar with a 42 lbs of thrust for years... Its no big deal
Its just one more level of responsibility you assume when you take to the air..

All though I tested my plane at full power, strait and level years ago, it has not
been at those speeds since.

The only problem I see with a too big an engine is you may exceed the V_MAX of the
plane. This can easily be fix by grinding a small notch on the ratchet of your throttle
stick at about %85 power. (i.e. 30-35 lbs of thrust)..

As we fly our planes we can't look down to see where the throttle stick is and can only guess at
our power setting by the airspeed or how many click off full.

This will give you more info to help you fly your plane at a know constant speed..

I don't see what the big deal is. When we fly, our job is to "Not crash the plane"
I don't see how adding "Don't go full power in a dive or straight and level too long"
is going to make flying any more difficult.

BTW... Flying RC jets has no purpose... Its just fun.. Everyone on this list has fun in different ways.
How can anyone on this list tell someone else HOW to have fun is amassing.