Thanks. You are correct the pixel sizes were incorrect ( i know better than to multi-task)
History: The original image is 6x6 on 120 film. It was scanned on an Epson Perfection 4990.
It loads into Photoshop correctly but not Lightroom (a bug report was submitted and they told me they would fix it for the next release)
I was able to print it using some expensive RIP software, but being a small business I wanted to reduce costs.
The "23 x 34" is my minimum size. Using the 600 ppi was to prevent pixelation on the larger sizes,
so reduction to 300 ppi was not an option I was looking for.
Fred passed along the image and the image itself doesn't contain anywhere near enough information to warrant the resolution being used. It starts to break down at about 25% zoom and at 50% (1/4 the file size), it's just blurry and grainy. Meaning... you could easily cut that file down to 1/4 the size (about 13000 x 10500) and not see any difference at all in the final print.
If you reduced to that resolution and printed at the same size in QU, the QU print will be as good or better than the RIP you used.
Mike