If you did that well at Cooley I would request a scholarship and stay. Any of those schools you mentioned are not going to open that many doors than Cooley will, unless there is a certain location you want to live in. If you are dying to live in New Hampshire then definitely transfer to FP, but otherwise it's not really going to make that much difference, which T2, T3, or T4 you go to. I go to a tier 4 myself GGU and I know 3 students that transferred to USF and Santa Clara after their first year and lost out on 70 or 80k in scholarship money. The reality is Santa Clara or USF don't open that many more doors than GGU does. Certainly not 80,000 at 8% interest more. I imagine if you are doing that well at Cooley they would offer you some kind of scholarship, if they don't then f' them and transfer, but if they do I would think it would be better to stick it out. At the least that is the consensus I have heard from the few people I know that transferred from T-4 to T-2. Granted if you hate Michigan then that is another reason to leave, but if you are doing it based solely on rankings it might not be the best decision.
As you can see from the Hofstra students post he is not all that thrilled about his tier 2 school either, law school is law school and unless you are going to an elite school the opportunities will pretty much be the same no matter where you go and you might as well get a lot of scholarship money if you can.
I only know 3 people to have done what you are considering, but none of them are satisfied with their transfer from a tier 4 to a tier 2. It might have been a good decision except for the loss in scholarship money, but it really is not worth 70 or 80k to transfer from the 162nd best school to the 113th. At least that is what people who have done it have told me, but I have only talked to 3 people in that boat so I am speaking on limited experience.