The next thing you might want to consider is an isolation platform you can put it on.
My turntable has an air bladder suspension. The stock VPI suspension required you to fill each bladder separately, but since I was already running my ET 2.5 off of an air compressor with a precision low pressure regulator, I removed the valves from the air bladders and ran tubing from each of the towers to another precision low pressure regulator. It made a huge difference vs the stock setup. I can literally tune the resonant frequency of the suspension while the table is running. I can hit the shelf (1.5" thick maple) with a mallet with no sonic issues whatsoever.