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UCC28742: design help

Part Number: UCC28742


Tool/software:

The datasheet for this part seems to indicate that the max power point occurs when:
-the Ics produces
a peak voltage of 770mV (Vcst(max) on the datasheet) AND
-when the
frequency is at 105kHz

Although the design worksheet I downloaded seems to indicate
that 80kHz is the max frequency.
I filled out the design worksheet, but It's not clear whether my design will yield the desired output, or if there are any other problems.  
There are a couple of places where the text in the design worksheet is red, but I don't see any values that are specifically concerning.

Can someone double check me on this and tell me if the design worksheet is indicating a problem?

sluc652b.xlsx

Thanks,
Mike