I am also semi new to vaping but here's my opinion a bigger battery wont really give you a better hit unless you go vv/vw. Better opinion is changing to a lower resistance coil or upgrading to a better tank (protank, aerotank, etc) Personally I had a 650 battery with an aerotank as one of my first setups and still go back to it as a backup. Another opition is to modify the air holes on the EVOD tank I have not done this myself but have heard of people doing this to get a smoother draw.