Cronus Magnum II & Dual Subwoofers

Hi all - looking for some help. I’m setting up my Cronus Magnum ii and trying to dual-subwoofer it (SVS SB-1000s). Honestly, I’m a bit lost.

1. On the Cronus, should I use the VAR or FIXED out for the subwoofer signal?
2. On the Cronus, there 2 ports each (red/white) for the Fixed/VAR outputs. Should I connect RCA cables to whichever you suggest and then send to Left & Right subs and into their respective LFE inputs?
3. I also have 2x hard RCA splitters. Should I use that to split the signal out from the VAR or FIXED (whichever you recommend) and then I could then take the split signal and attach to each SVS’s Input and LFE (corresponding to the white / red on the back of the amp and the subwoofers inputs)?

Thanks! I’m happy to message pictures if that helps.