Forum:Chaos deck consistency

Well. I won unoficial tournament with this deck

I need help with 3 things: 1.That tournament prize was 3 cards. I can choose to get 1 monster, 1 spell and 1 trap card. I need help what to choose. I want that monster would be light lv 4 or below. 2. I am thinking about adding Soul Absorbation, Primal Seed , Soul Release , Chaos End. Id it worth doing? 3. If I add those cards what cards should I remove so I could have 60 cards?