what is "to" high? If its not at rev limit whats the problem? You want it to be that high so when the rpm's drop down you're still in you're powerband/ utilizing the boost you're maintaining. Also have you had any prior experience with FFS, it's not something you want to use on the regular. Even at the track, unless there's that pesky car you're trying to beat. Shifting any ealier than mentioned would not be utilizing the whole powerband.
You want to depress the clutch as soon as it gets to the benchmark of FFS, as quickly as possible while engaging the shifter into gear. The quicker the better, but MAKE SURE you depress the clutch all the way. People get excited a lot of the time and don't depress the clutch all the way down resulting in a nicked syncro or tottal mis-shift.