No, I don't have an omni wallet, yet. So if I create a omni wallet there I can send the api coins there along with some btc or/and mastercoin? Thank you for helping, answering and forgive me again for my reaction!
Yeah, you can either import a private key or create a new address, you just need a small amount of btc in that address to be able to send those coins later on..
Just don't forget your wallet ID and make a strong password. (or if you have the private key in backup you will be fine..)