I would not crossover this high on a 10" inch woofer, there might be some nasty cone breakup modes up there.
The tweeter is a 28mm dome with a resonans freq. of 700hz, so it should be safe to cross anywhere from around 1500-2000hz/24db, and up.The woofer response shows a rising response from 900-2300hz, so you might want to cross lower on the woofer, and use the natural rolloff combined with the crossover, to get the desired crossover point.