Your don’t decelerate to come to rest. You essentially accelerate until you reach the desired height of your orbit, then accelerate some more to turn the elliptical orbit into whichever shape your want it to be. This is as efficient as it gets.
Also, since there is only micro gravity, there is no need for a good structural support. When it can withstand the launch, it is already way overkill for microgravity, at least the systems we currently use. There is a lot of improvement to be made.