Correct, that was the company's best estimate based on the 2 cent SP at the time of filing. They can change the final split ratio once approved though.
However, at 4 cents and 300-1, the Nasdaq open price will be $12. At 400-1 the opening price will be $16.
If the SP gets to 5 cents, open will be $15 at 300-1 or $20 at 400-1.
The formula is current price times the split number equals the Nasdaq open number.