Best way to make large deposit

I am looking to deposit around 8k into betdsi account. I'm considering either western union deposits or a bank draft.  I'm planning on leaving the funds in there for some time so I'm not concerned about waiting periods.  Just looking for some advice on the pro's and con's of each deposit method.  Thanks for your help!

best way is to wire the money to me, i'll see your account gets funded a.s.a.p.

why do you want to deposit such a large amount?  will you be betting $500 units?

dont deposit that much money in a book.