Yes let's address the explosion of growth. As your first plant it looks like you may not be prepared for what is about to happen.
You have a net in place and I understand you are getting tips to train the plant outwards and allow the growth to go up once you have em spread. Even so it is probable that your growth above the net will go about 15 inches.
You do want tall stout colas rights?
Well this means you are going to run out of overhead as it looks like the HVAC is in the tent. The closer to the plants the smaller the footprint of the light. Most lights when they say 4x4 coverage mean 12 inches from the light. It looks like you may run out of room and will learn words like super cropping and HST.
A suggestion.
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Move your duct fan kit outside and turn it into a suck out from the top system. This allows you to mount the lights at the top of the tent if needed
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I have a 63 inch tall tent and an 80 inch tall tent and both have mechanicals outside on top.