Congratulations! I know the feeling when you get some new fishies But just be careful with your water parameters now, because you had no fish before in your 8 gallon tank and there are probably not enough bacteria to support all 6 fish's wastes. You'll probably have to do frequent water changes to remove nitrite (and/or ammonia) which can possibly rise with the addition of 6 fish at once.
So, have you started thinking about your 2nd tank yet, or are you going to start planning it after stocking your 1st?? ;D ;D ;D Mooahahahaha!! The MTS virus has landed, but will it take hold?? ;D ;D ;D