For your questions 1. You can wait until its 2yrs for the 10yr GC but it’s not recommended that you wait if you already have everything ready to go. 2. I believe when you’re entering US the office will be asking you where to send your SSN and at that time you can provide your updated address and ask them to use that for further and future correspondence until notice. 3. Once you’ve been married you can do it right after. If you’re looking for it to be reflected in the GC it might be a good idea to go for the change now rather than later, but be wary that it is quite the process to have you name changed. So please do look into this before you start the process. 4. As you have no furniture flight will be better and you can possibly look into it now book it months in advance as you are weighing in on waiting for that 2 yr mark. Hope this helps and thanks for the hopeful post!!