This is the first time i hear about overpowering, how is that how do you noted ? the final weight was 200 gr.
Yes you are right about the cheaper motors, but i'm learning about RMS Motors
Because of the way it just LEAPT off the pad near instantly... for scale models, there's something to be said for a "slower, more realistic" liftoff, which of course also means it doesn't fly as high, but then, sheer maximum altitude isn't the whole idea with scalers-- LOOKING AND FLYING COOL is!
That said, NASA and other "real rockets" routinely use thrust/weight ratios down as low as 1.1:1, or, stated another way, the thrust is as low as only 10% more than the liftoff weight of the rocket itself! This works because 1) NASA rockets are "actively stabilized" using engine thrust to correct the flightpath by engine gimbaling, or diverting the nozzle flow to one side or the other as needed via steering fluid injected into the nozzle... and 2) Large liquid fuelled rockets begin losing mass very quickly at liftoff as the propellants burn off, which causes the thrust/weight ratio to increase steadily as the propellant is burned, causing the rocket to accelerate faster and faster as the flight progresses. This is the reason the Saturn V shut down the center engine about 30 seconds before the outer four F-1's-- the first stage had burned off SO much propellant and the rocket was SO much lighter by that point, that the g-forces had built up to the point that the rocket would be over-accelerated with all five F-1's burning-- and they weren't throttleable, so they shut down 1, reducing the thrust from 7.5 million pounds to 6 million pounds until burnout and staging.
Our model rockets don't use thrust-to-weight ratios anywhere near this low, because we rely on aerodynamic stability, which requires a certain amount of speed (generally speaking, 25-30 mph or so leaving the launch rod) to ensure there's airflow to generate corrective forces on the fins... Typical model rocket thrust/weight ratios are around 5:1... MUCH higher than "real" rockets... SO, getting a "low-n-slow" liftoff is just that much harder... that's why typically you want to pick a motor for a scale or semiscale rocket that has a maximum recommended liftoff weight JUST OVER the "ready to launch" weight of the rocket, including the motor...
There's "suggested maximum liftoff weights" posted for most rocket motors... matching these to the weight of your rockets is a good start to not "overpowering" them...
Reloads are cool, BUT, you want to make sure you don't lose your rocket-- lost reload casings get VERY EXPENSIVE in a hurry!!!
Later and good luck! Great rocket!
OL JR
, I think the ejection Charge is to strong. 
