I need some opinions

i am waiting for my intake date into the R.E

my friend is already in the re and has bought me a re tshirt, is it acceptable to wear it b4 i actually begin my training?

and i also have my brothers old smock which i really like, but it has a r.e DZ flash on it.

is that acceptable to wear?

please can someone offer your opinion?

Do what you like but leave them at home when you go to basic. The less reason you give people to think that you're a kn0b, the better.
Show how keen you are, put a set of wings on your right sleeve. You'll win friends everywhere you go.