A Conscious Universe

[Mudhammam]

Okay. If QM particles (or whatever underlies them) turn out not to be unamibiguously representable in space and time (which I believe to be the case), then I'd say the QM particles represent a mathematical idea than real stuff, and that macroscopic bodies represent a complex interaction among these elemental ideas.

You're putting the cart before the horse. Mathematical ideas are nothing more than curiosities until experimentation in the physical world confirms their correlation to the actual processes under measurement. That reality may be utterly different than our conception of physical existence when it is divided into its most fundamental constituents is not indication that thoughts provide the building blocks of matter, time, or space. It rather signifies the narrow-mindedness of our ideas.