I'll try to give a quick indication of my Apex speeds.
Turn 1/2 (the first hairpin) I don't really pay attention to. It's all about where you brake going into it and I try to brake just before the 2 sign.
Turn 3 (right hander) I try to keep it at 70, but generally dip to about 68/69 but I'm always on the gas about 1/3rd of the way through the turn.
Turn 4 (another sweeping right) is a throttle lift and if you nail it you can apex it at 86 while full on acceleration down the next straight.
Turn 5 (the hardest turn in this car an uphill left) this turn is challenging. I brake and dive for the corner usually about 73mph with a smooth acceleration necessary. On a good lap I pass the end of the rumble strip at 84mph.
Turn 6 (sweeping uphill left) this is a gentle throttle lift and dive hard into the corner. You shouldn't drop below 87 while keeping it around 90 is a perfect turn (this is the 2nd most challenging turn). You should hit the time check at 94mph on a good turn and 92 on an average turn.
Turn 7 (corkscrew) I brake at the 3 sign and pretty much come as close as I can on both parts of the turn to getting penalty time without getting it.
Turn 8 (sweeping left) You need to be smooth here to get as much speed from the following short straight. I don't pay much attention to speed only to being smooth and reducing tire noise.
Turn 9 (hard right) I treat this as a brake/gas combo turn. I gently brake to slow down while hitting the apex at about 80 trying to accelerate onto the next short straight.
Turn 10 (hard left last turn) I brake just past the line on the track (and I mean just barely) and try to hit the apex of the turn with full acceleration out just barely touching the rumble on the outside at about 52-56 mph crossing the finish line at 94/95 mph.
I'm about .9 slower than Potzy, but those idas might help
