For height I'd install them on the ROPS. It will take little slack to permit the ROPS to fold, all you need to do is put the ROPS back up when you go outside. The cable should go up the hinged side that stays together when folded.
On your loader arms will get you some height.
And with them ahead of you there is no glare when you turn to look back.
This is what I used to mount my light bar to the ROPS;
Amazon
AKD Part Tube clamp, 2pcs Powerful Magnetic Base Mount Bracket Sucker Holder LED Light Bar Roof Magnet Bracket for LED Work Light Driving Lights Off Road LightingView attachment 625514
This is what I used to mount my light bar to the ROPS;
Amazon
AKD Part Tube clamp, 2pcs Powerful Magnetic Base Mount Bracket Sucker Holder LED Light Bar Roof Magnet Bracket for LED Work Light Driving Lights Off Road LightingView attachment 625514