holy jesus, you're tires rub and you're not even lowered??? What you need are a smaller set of rims if that's the case. Lowering your car will only make it rub worse. What I would do if I were you is get the fenders rolled, that will help a lot with the rubbing.
Also, cross drilled rotors are crap. They tend to crack where they have been drilled. It's just less surface area for the brake pads to make contact with and also compromises the strength of the rotor. And your drums are fine, actually, your entire brake assembly is fine in stock form right now. Bigger rims do equal more rolling mass, but it is nothing your stock brakes can't handle. I wouldn't worry about it too much until you start making some good power. However, if you would like to take some precautions, which i recommend you do, get a set of high performance break pads.
When you are ready to lower your car, make sure you either get a full coilover setup or purchase shocks along with your springs or coilover sleeves, what ever you decide to go with. The stock shocks will blow in a matter of months once you are lowered. They can't handle the extra suspension travel. And a camber kit should be high on your priority list if you plan on keeping your tires for a while.