En mi opinion, el deck se ve algo debil ante efectos de monstruos, yo quitaria un metalmorph y un forbidden chalice almenos. Suerte en tu camino a KOG.
There is no chance in hell you could assemble this deck in only 20 days, unless you activated Credit Card big time and playing nearly 24/7. Your deck is good, it'll probably get you to legend but will hardly go any further; those godforsaken Control decks are too slow to face Ninjas or CA and get owned by Burners
Use Beast Rising and Mirror Wall instead of Beatdown. I use 3SD as a skill and a lot of Trap cards to protect them... Every time I use the Sphinx Effect, I only have to chose between Trap or Monster, which is more simple.
In fact, I also use Double Summon along with my trap cards. Because if you have a level 4 monster and a Hazy Flame beast at the beginning of your turn, you can summon the latter without using 3SD... and if you have two Hazy Flame Beasts and Double Summon -> 3SD + Double Summon = 3 monsters on the field turn 1. Every time I manage to do that, my opponent rage quit.
20 days with P2W cards... Not impressive. And you say you are KOG? Massivemorph is everywhere in Gold and above how did you manage to beat them without touching their HP?