As the title says, I'm upgrading from my current late-08 to a new to me mid-12. A few questions: 1) I have a 1TB HD in my current MBP, may I just replace the 500GB in the mid-12 with my current or do I have to back everything up, reformat it & copy over? 2) I have a Seagate 1TB backup plus ext HD with Firewire 800 - will this work with the mid-12? 3) what Thunderbolt adapters do you think I would need? I think so far, Ethernet & HDMI but am unsure. 5) is there a 3.0 USB to 2.0 USB adapter/converter? I don't want to have to replace all of my thumb drives, etc. 6) what else am I forgetting? As always thanks for your help.