You have 3x 2.5" space to fit 1TB SSD. Plenty for games.
The 5.25" bays no one really uses them. It is not wasted space, it gives clear direct airflow for fans and rads to fit 360 in front.
It is same style as Define S, NZXT S340 and many others like it. If you want optical bay, R5 is close to it.