I cannot comment on your choice of machine but I can say I think you will find vacuum cleaners inadequate for a vacuum table and looking at the pump in the picture it may be inadequate because it looks like a centrifugal pump.
For effective vacuum holding you need to be able to pull a vacuum equal to at least 0.75 atm and this is impossible with vacuum cleaner motors and a real strain for a multistage centrifugal pump. You really need a positive displacement pump such as a vane pump. I converted an old compressor into a vacuum pump and it worked very well.
An open mind is a virtue...so long as all the common sense has not leaked out.