re-use

I'm planning a new build using the Ryzen 5700G, 16GB RAM (tbd) and the MSI MAG B550 Tomahawk. I plan to re-use my existing HDs and CD/DVD drive - a total of 3 SATA devices. I'm not so sure about the case (an older Antec with 3 5.25 external bays, multiple internal 3.5 bays and 2 x USB 2.0...