Hi & welcome to HC! Ah, lovely robos
As you'll probably have seen if you've had a little look at the thread boards, keeping a pair can be tricky & it doesn't take much for them to fall out. Opinions will vary when it comes to the right size cage for any hamster & when is best to move them but I'd personally say in this instance that I'd leave them as they are for the time being. They've already had one upheaval so I'd let them get used to living together in a new place before uprooting them again. It seems to work best if you have houses with more than one entrance & if you have two of everything & just make sure to keep an eye out for any bickering. And have fun!