Forum:Advice for this Gemini Deck

Ok, I've recently wanted to make a deck that could compete with the more Yu-Gi-Oh centric members of my gaming club. Bought a Structure Deck 17 off of a friend, and have made some modifications as seen below.

Haven't looked into Fusion, Syncro, or Xyz Monsters since I'm not sure if I'd sacrifice Gemini effects for a monster with extra attack power, especially since I have many attack boosting cards and monsters that can improve attack. Thanks in advance for the help!