That is the correct logic for tank-to-engine fuel panel set-up. Crossfeeds 2&3 are guarded switches and should not be touched in-flight, unless a checklist directs you to do so. Use your knowledge of the 742 to compare with the 744 systems - you will find much similarity, just a different presentation. Perhaps the most important difference is the FMA -learn it as quickly as you can and it will help with the "what is it doing now?" question! (the answer is, inevitably, exactly what you programmed it to do!). Good luck
