Its completely down to what kind of smoke you want. If you want a more clear headed stone with less of a couch lock then I would suggest cropping early but if your after really nice strong potent bud like most are after i would advise waiting another 2 or so weeks until the trikes cloud up and you can see a splash of amber this way you know she is rripe enough to be considered for harvest i wouldnt just look ast the trikes either I would take loads of varibles into consideration. Trike size, How many Trikes, How densly packed they are , are the heads large enough to contain a good amount of thc, Does she smell ripe, Have the pistils started to curl back into the bud and lastly is she flushed enough to consider harvesting (if you flush) only after ticking most or all of these boxes will i consider cropping her as you will find she will do most her densing up in the final weeks of growth pushing your yield up and getting you them nice dank nugs, Anyway good looking plant good going bro you should be proud best of luck for a heavy harvest :) keep up the great work. 👊