Haha! You went in big.
Man, I didn't buy much Beta packs yet. There are so many of them (900k I believe) it will be a while before they sell out. I'm waiting till I'm back home to aquire more.
I have a lot of alpha cards already though. All common Alpha cards I have double multiple times, just let me know what you are missing.
Other places to look to fill your set is the market and the steem monsters discord trade chat.