keep in mind this is all personal preference since there’s a lot of ways to make great recordingsd
how’s the room sounding? If it’s treated I don’t think you have anything to lose trying a cheap shure boundary mic and mounting it with sticky tape to the opposite wall. If the room isn’t treated I probably would go with a condenser in cardoid 3 feet off the ground and spaced away from the cab to taste. If you get any weird stuff happening from the dimensions of the room I might also move the cabinet off angle from the wall so it isn’t parallel and probably 1-2 feet away from any surface.
Thats probably where I would at least start and then experiment from there. Though if you already have a spot in your room you love then just move that room mic around until you’re getting the sound you want and print it haha