If your bubs are used to being in the same room I would put them together. I would use the same beds as you are using now, and for a settling period I would set up a mattress on the floor for yourself. this may take time but you could lay down on your mattress once both kids are in bed, and maybe sleep there of a few nights then gradually remove yourself.

Other things I would do is get a monitor, and a night light. Other suggestions would be to start them off having story times in that room and doing a lot of play activities in the room before you set them up to sleep in there. This way they'll get used to the room.

Goodluck