Difference between 29 and 30 is negligible, you'd be unlikely to feel it.

Pressure guages vary in accuracy of reading by more than that, so I wouldn't worry too much about front and back.

Whether you have front or back higher/lower pressure depends on the circuit, depends on the bike (how much power you've tweaked from you NSR), depends on your riding style, and depends a great deal on suspension set up. It also depends on what you want from the tyre.
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