Before you make your decision consider some facts about rotors.
Slotted rotors, prone to cracking, will increase your stopping power but are mainly for looks. Quicker pad wear is also another consideration with slotted rotors.
Cross-drilled rotors are prone to cracking and possible breaking. The only truly safe rotors have been cast with the holes in them, not drilled.
IMO you would do much better by replacing any steel brake lines with stainless, braided hoses and change the brake fluid every 2 years. For longevity and warp resistance I would stay with solid rotors.