exp/imp from 8.0.5 to 8.1.6
can I have a different db_name than the one I am importing
from ???? and can I have different names, location, and size for my tablespaces and db_files,redo logs, control file,etc...???
If you have a full export, you can import schema by schema. If you do a full import, it will create tablespaces, and stuff for you. I recommended schema by schema because you wanted to change the physical structure of the database.