The stage in the very dark photo is the room it was essentially purchased for. It’s a 650 upholstered seat auditorium with a flown-mains installed subs 60000+ watt sound system with mega-lows so if the 800 is bass heavy it goes unnoticed

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To your question I chose the most extreme low-end roll-off in global settings and that gave me a cleaner bottom, which I prefer to girth.
Yes I’m D.I. out, that’s post and on the lowest setting, as well.
Tweeter is on to give me the fullest range for more accurate monitoring, but I’m a one iem guy in that environment also and the bass is in my ear a bit, as well.
I’ve done the direct-only route and was relieved to use an amp again when we moved to the larger space. Some of it is the inspiration of a good thump behind me and so far it’s been flat on the stage floor.
I’ve thought about an isolation platform but I don’t think I’ll go the stand route. Once my foot is fully healed and extravagance kicks in, I’ll probably experiment with adding the 2x8 cab of the TC Electronic combo to get the sound closer to my ear and add headroom.