This Deck is just awesome. It uses the engine of Geartown and Machina at the same time with the expansion of Beast King Barbaros + Skill Drain Combo. Almost all cards can be used to Summon Machina Fortress (Gadjiltron Dragon is the first target, can be revived with Geartown. Another one is Barbaros, since if you discard it, you can remove it to Summon Barbaros Ur).

Gigantes might be really cool here. Practically all the monsters are EARTH, so the cost is easy. It's a 1900 beater, it can draw out BTH/Warning (like CyDra), it can Heavy Storm (nice when you've got Geartown out) when it's destroyed by battle, and it's another 1900 points closer to an OTK.

On that note, maybe -1 Double Cyclone, +1 Giant Trunade for pushes for game.

I hope that helps!

Double Cyclone is good but what do you think of Terrafirma? It's a pretty decent searcher .
Gigantes sounds awesome here for your Deck.