I would not go with the drives all on one board for the same price you could have :- https://www.ebay.co.uk/itm/5pcs-CNC-....c100677.m4598

or

3 of these:- https://www.ebay.co.uk/itm/20KHZ-CNC....c100677.m4598

The bob you linked to is OK if you want a cheap one. I have used them a few times