How do I set audio output bit depth, or why can't I?

Yes it is enough, I love 32 bit, I just prefer mixing in 24 bit so my projects arent’ more than 10 gigs. -144db of headroom isnt to shabby either. I export my final wav to 32 bit floating point for mastering.

I guess thats my question, which is the best variable for development?
Here is my output of sizeof function…I assume outputs bits.

Screen Shot 2022-05-19 at 1.36.31 PM

I sincerely think doubles are better sounding than floats. I don’t know if long doubles are over kill. However, I assume they’re more trouble than they’re worth, at this point in time.

I found this… that is where I am now, converting the process block to doubles. There is a reason analogue summing sounds better than digital summing.