2 radions is a good start but 4 would be optimal for xr15's. 2 will not cover that system long term. I ran 4 on my old 80 growout and run 3 on my current 50.
May I suggest ReeFi Uno 2.1 lighting. I used the 2.0 version and liked quite a bit and even though the price has gone up some they’re still slightly less expensive than the Radion.
The radions won’t cover that tank.. I’m not familiar with the other lights myself. You’d need a minimum of xr15 and it’s pricey! Meridians would be my option