Hmmmm..
I would also agree too just keep either one Syrian or one Dwarf hamster in that cage. But overall I would say if your willing too put the time and effort in to building that cage..Then go for it
But after having experience of having a wooden level in my Dwarfs cage, I would reccomend making it waterproof somehow? Maybe using like a pond liner kind of material too cover the wooden floor. But dont use varnish! Its toxic too hammies!
x
(But if you dont waterproof the would...I would recommend you try and potty train your hammie? It saves having too replace the wood every so often.. Because it will rot, and eventually start to wiff abit
! Good luck x