Using an iMac, wife wants it back. Se we need a new laptop so we can share. So I'm Thinking of getting the 1TB drive rMBP 13. Going for more storage rather than power, so it can be my main drive (plug in a couple externals). But I also want to use the iMac's power and display occasionally: using target disk mode over TB and booting from the rMBP disk. This way I can get the 13" and always know I have a dedicated GPU I can use. I want to know how much frustration to expect. The iMac is of recent vintage. Should I plan for problems like product licenses (Adobe) looking for specific hardware after I install it, the system having to switch between hardware sets, etc. Am I asking for trouble? It can't be perfectly seamless can it? I'll end up doing this either way and can report back, but I wanted to know if other people have done this and have advice.