If you got the $$ to replace all the bushings and controlarms, then go ahead. Your MB will feel like new.
But if you only want to get rid of the vibrations, check ALL other possible causes first.
I had every single piece of rubber replaced for $1500. Read the thread HERE
What is not mentioned in this thread is, that before the repair, i also had the same vibration under acceleration as you describe. -And i still do..!