once shes toppped you will have 2 new shoots iv seen plants topped 5 times or more it doesnt have to be just the top of the plant top all over if ya want ,if your lacking the vertical space top and lst is the way to go, try and keep that canopy level bro as for the temp i find it rather high i like it between 72 and 79 and humidity 40-60 i find works well
-edge