Huge drum sets are for stage appearance. Buddy Rich, one of the all time greats, said this in a Modern Drummer interview... if you need more than 4 drum and 3 cymbals you ain't worth a sh**. Obviously this is a bold statement but there is much truth to it. Trying to hone your skills on a large kit is very detrimental to your drumming. You actually have all you need right now except a double bass pedal. I despise double bass drumming with all my heart and soul, but if that's what floats your boat so be it. In metal it is almost a must to use double bass or a double bass pedal. One issue I have is that both ways force your hi-hat to be further from the snare than I like. There will be certain little licks down the road that will be very difficult unless the hi-hat is close to the snare. Also people that play double bass early in their career generally never develop a good right foot. Also many of them tend to over-use double bass and/or work on it so much that the rest of their drumming suffers. I know this is more than you asked for but just trying to keep you from falling into the same traps that many of my students have. Good luck.