Absolutely. My original thought was that Landry should start at PF because I imagined Dalembert would start at center. I didn't see Cousins being ready to start and play big minutes right away. Conditioning, foul trouble and just adjusting to the pro game made it seem likely to me that he would start the season on the bench. Summer league isn't the best barometer but DMC has been good enough to make me reconsider who should start at center.
I agree that you reconsider it, and you continue evaluating until opening day, but I think we'd keep arriving at the conclusion that Dalembert should be the starter at the beginning of the season, not Cousins. And if you start Dalembert, you can start JT or Landry alongside him. I think that Landry is best off the bench, so I'd hope that JT could start, but wouldn't want to be handicapped offensively with two limited offensive big men. As far as pairings go, I think Dalembert/Landry works nicely, and Cousins/JT works nicely as well.
The main reason I think Dalembert should start is because he's an established defensive presence, and we should have him on the floor as much as possible, if for no other reason than to take pressure off of our backcourt, namely Tyreke and Francisco. I know we don't anticipate having him past this season; he might even be traded at the deadline. But we should utilize him while we do have him, and if he is a significant defensive contributor, he might have increased trade value midway through the season.
Eventually, I think our starting duo will/should be Cousins and JT, with Landry coming off the bench. Assuming Dalembert gets traded, that's probably what we'll be looking at. Landry can go back to doing what he's best at, and our young duo can gel and get ready to take the next step. Cousins should improve on help defense as his conditioning gets better, but he'll never be Dalembert. And Whiteside can be ready to be the third big after Landry leaves next summer. Meanwhile, he'll be the 4th big at the end of this season.