I'm not sure what Neo is talking about, except for the tying down of the plants which is LST. Unless the big colas are too close to the light and you're out of height and you need to bend them slightly, you shouldn't mess with them at all.
You do those types of things if you have height limitations in your room, I don't think you have that problem.
I top all my plants. I top at least twice, sometimes more, while they're under the T5 vegging in the nursery, then again one week before flipping to 12/12. I do it with all my strains to produce multiple top colas, as well as do some height control as I do have limits. I've never noticed anything different in the results between my kush strains, skunk strains, or my other hybrids.
Once the budding is going on the only cutting I do is of fan leaves, and then only after day 30. About a week before I'm going to harvest a plant I remove all the fan leaves and only leave bud leaves.
Can't you increase the temp in the room the tent is in? Run a space heater or something? It is a tent right? Can you adjust your ventilation to allow more of the heat from the light to get into the tent? Cool temps slow growth, reduces bud sites.