Forum:Combine Structure Decks?

Hello all! I have just begun to gain interest in Yu-Gi-Oh TCG and I have a question. Would it work to buy two different structure decks (Geargia Rampage and Machina Mayhem) and combine them? I know it would probably be cheaper to just buy one structure deck and some booster packs, but I was liking the idea of a machine themed deck. Thanks for any help!

Note: I already have the Geargia Rampage structure deck and a 20 card booster pack.