I received mine today so yours should hopefully be on its way if not delivered today 🤞🏽 fingers crossed for you.
I have opened mine up and initial impressions I am so damn excited to build tomorrow 😬
My bad I miss understood the question, thought it meant mounting the radiator the other way around, but yes I've seen it done a good few times it's all down to having enough clearance on the vrm side, that's typically the challenges many have had.
Not sure it would work, as one tube would in theory exit from the wrong side of the case i.e in the GPU chamber then it's about getting that back over.
You'd be better off sticking with the SF750 it will make your life a lot easier I think, bitwit used an sfx-l PSU and it does fit but cable management and SSD placement space is limited. Maybe with custom cables it might be easier.