OK, Here is what I think I will do:
Puffer: I traded one in to the LFS. I will setup a 10g brackish tank just for the other puffer. Is there anything else that can go with it? I really like bumble bee gobies.
Tiger Barbs: I will bring them back to the LFS. (A profit, cause when I bought them they only charged me for 1

)
Lobster: I will leave it in my 29g for now, maybe give it to my brother for his empty 25g
I will keep the serpaes in my 29g, if I get rid of the lobster, I may get a few ottos, but will the cory eat them? Also, I would like a schooll of neons in my 29g (8-12)