Welcome to the bourds.
Let me start by letting you know that in the past posts have shown up like this that turned out to be a seasoned poster, who had nothing to do & thought they would spice up things. So be ready for alittle ribbing.
But I'll stick my neck out for ya, Being the holiday season & all
To run 5000-6000 rpm's & get the speed you are looking for your gear & prop. combination will make the boat an absolute dog out of the hole & take a mile to get their, If it does. Part of the speed deal is to get the boat out of the water & freed up. It would be so lazy out of the hole that it would never get free of the water.
You can also make more power at higher rpm. Search for a video with sound of a flat/runner leaving the line. You will here the motor RPM out of the hole (prop. slip) then pull down as the prop. grabs water, then build rpm to the lights.
Good luck,
Lots of invaluable information here, & lots of Playa's
Morg