A cage that large will not work well with a pair of dwarf hamsters.In fact,dwarf hamsters in general are very risky to house together as it is.It is not natural for dwarf hamsters to be in a same sex group anyways,and to house two dwarf hamsters of the same sex together can be detrimental to their mental and physical health
The cage would be excellent for one dwarf hamster,but definitely not for two.Instead,you could make one 100 cm x 50 cm cage for each(or buy them if possible)which would be better than housing them together.