There's some sleds out there with Nitrous. I saw a MAch Z 1000 a couple years ago with a nice blue bottle under the hood. Those Mach's are pretty quick stock. I couldn't imagine what it would do with some nitrous. They're supposed to be about 155hp outta the box.
House what motor you got in the Apex? I haven't kept up with the newest models of sleds lately.
You get too many studs and the track will swell with weight of the studs. My 800 does it. I'm thinkin of going to a 1-1/4" ripsaw next year and cut my number of studs in half! IT pushes to hard in the corners.