Export ProRes 422 as 10 bit without loss and no increase the file size

Hi,
How do I export ProRes 422 as 10 bit without loss and no increase the file size? I use Premiere Pro Creative Cloud on a PC; file shot on a BMPCC 6k. Exported files must:
- Export as .mov
- Be 10 bit
- Have no loss
- Not increase in size
I used a pretty standard lossless method with quicktime ProRes Uncompressed 4:2:2 10-Bit ( YUV Uncompressed 10-Bit ) that increased the the file size to 10 times the original file size. This will not work for stock video; too enormous. Also, I shoot flat and only do "basic color correction" (no color grading) and sometimes use warp stabilizer.
How is export from Premiere Pro on a PC done while giving customers a file that can be fully editable in 10 bit?
Any ideas?
Thanks,

I use a product by Acrovid. The older version (which I prefer to simplicity) is called 4K Footage Studio. The new version is called Intertake. They both will give you all levels of ProRes.

I export my clips as Uncompressed YUV, then import that into 4K Footage Studio, export as ProRes 422 or 422HQ depending on how cool I think the file is.

The newer version has more ways to process (colour and noise reduction, etc) but it's very clunky. Works great though to set up templates, import multiple files, and export as batch. I also use the trim function on those occasions where I get a glitch at the beginning of a clip (happens when I overload my GPU too much).

I don't know what your original file sizes are. An average 14 second clip comes out to about 1.6GB (depending on content) in 4K PR422