Tier 1 is where you want to be and is the tier that get the higher valued prizes.

My question now is will the referral bonuses of my future buys go to you or the person that gave me a code?

I still should get the affiliate bonus from any future booster pack purchases but I am not 100% sure. Its great that you were gifted a promo code and got the starter for free :) You should be receiving a message confirming your new @dustsweeper accnt shortly.

Good Luck on the battle field !