I'd suggest you a good grinder, AeroPress and scales. AeroPress is forgiving and versatile, it can brew both light and medium roasts. As to grinder, it's up to your budget, but if you're planning to upgrade your setup later, it's cheaper to start with better but more expensive grinder than buying cheap one and later more expensive one. Scales allow to keep exact water to coffee ratio and get consistent results. Scoops and water marks on AeroPress are not that accurate.