Oh, my. They are just going to be so much fun together. Of course I trust your judgement but it is hard to wait for these two to prove themselves as a dynamic duo. I guess one suggestion I would have would be to take them both on a walk together (each dog with their individual person - leashed of course). They will each be occupied with the activity of walking, under the control of the leash, yet in close association with each other to get used to being together. Plus these two are going to turn some heads (hunk magnets perhaps?)

Great picture of Sara. That's the framing variety.