Looking for some advice

Hi, I wanted to share some pictures of my Dutch Passion Durban Poison grow and ask some advise.

This is my first photo period grow. I am using two TGL-100 Cob LED lights, in a 2x4 tent, growing in coco/perlite mix, and fertigate about five times a day with my homemade automatic watering system using GHE flora series nutrients. I pretty much followed the methods of Dr MJ Coco of Cocoforcannabis when It came to preparing the coco and his way of stepping up the strength of the nutrients during the seedling stage, and so on.

I germinated on the 4^th of June, (it was a happy day) just putting a seed in a moist Jiffy Pellet.

After it popped I placed the jiffy in a small nursery bag filled with coco/perlite.

On the 10^th It looked like this.

On the 19^th of June I transplanted into a 1 gal smart pot.

On the 27^th I transplanted into a 3 gal Airpot, and on the 28^th I topped it.

Then during following weeks I proceeded creating my first mainline. I think next time I will super crop the two main stems, to lower the risk of a split in the middle.

I had only been hand watered twice a day, but now I put together a kind of “watering ring” using plastic hose and some 90° mini sprayers (It works kinda ok) and started tuning in the automatic fertigation system.

On the 13^th of July I went from 18/6 lighting to 12/12.

After that and as the plant started to stretch I put up a scrog net and started to tie things down. This was my first time using a scrog, and I think it was of great help.

After a week of stretching I put up another scrog higher up.

The speed of growth of these plants are really quite amazing.

Tie down one day..

And the plants “recover” the next day

Here is how it looked on the 13^th of August. Lots and lots of leaves.

To mitigate rising humidity and heat (heat generated by my dehumidifier) I took to the scissors, and did some strategic defoliation. The heat might have been a bigger problem than I thought at the time.

I had been feeding nutrients at EC 1.0, but noticed that the leaves where pretty dark and the tips got burned so I lowered EC to about 0.8.

The following two picture was taken on the 27^th of August.

Here is one from the September 2^nd

I noticed pistils started turning red at around the 27^th of August. Probably started earlier than that though.

Tricomes are.. well not easy to judge. Mostly clear I would say, but some milky and some amber and a few very dark.

My plan is to do a flush with florakleen and switch nutrients to GHE Ripen for the last 10 days or so (as per the instructions from GHE)

Thing is.. I am not sure about how long I have left before its time to to that switch?

Of course it is a matter of personal taste when it comes to how much amber one might like and so on, but as this is my first photo period plant I wouldn't mind some input from more experienced growers

EDIT: Just as I was finishing this text I decided to cut a few samples of three different buds and try to take some pictures close up of the trichomes with my (cheap) usb microscope and I found what looks like bananas?

I have been struggling with fairly high temperature, when lights on measuring about 27-29 degrees in the middle of the canopy. During the dark period the temperature is around 22-25. Humidity 49%-60% thru both night and day.

Please take a look at the pictures and let me know what you think, and if it will be a problem for me? I only have this plant so I am not afraid of spreading pollen to other plants, but what about self pollination?