Bench Grinder Stand question

[roll_the_dice]

I want to make/get/buy a bench grinder stand... I found a 16" diameter 1/2" thick steel disc/circle. Do you think that is heavy enough and stable enough for the base or should I go to a larger diameter? I will not be mounting it to the floor for about a year as we are preparing to move. Or I found a "vintage" cast iron Craftsman bench grinder stand...I could just buy it and call it a day.

This is the craftsman stand...