Sounds good, I would tie down the screen now to the bottom horizontal poles (one tie each side) while you have easy access. It gets more complicated as your screen fills. Make sure you give yourself at least a foot above the base of your TD for screen clearance and ease of access for under screen pruning, drip ring access to clean, etc.
FYI, I germed my TD on 2/19 spent another two+ weeks introducing to veg via a Hempy pot and did a UB topping which I blew and got two main stems instead of 4...DUH.... This reduced it from approx 6" tall to 2" to 3" tall. Left it in the Hempy pot for another 3 to 4 days to recover and then transplanted to Water Farm. 2-1/2 weeks in the WF produced explosive growth and I started weaving during veg.
My guess (as I do not have my notes handy) is 45 to 50 total days of veg of which slightly less than a month in the WF before the flip.
I would say I had a 60%+ fill when I flipped and changed my screens from stand alone to fixed to tent. I had to carefully remove the old screen and re-weave to the new. I did this as I could see that I was going to outgrow my smaller stand alone screen at the rate the plant was moving.
My phenotype is Sativa dominant and stretched quite a bit in veg. Now in it's 3rd week, she is reaching for the sky. And I am about to put a 2nd screen on to organize cola placement.and aid in ventilation of bud sites as they fill out.
As I was new to scrog and to Water Farm, I got some good input from ottermunky as to when to flip, and I see she is watching your grow, so I would listen closely to her advice.
Nice to hear your TD is forgiving with your tuck and pulls, mine grew so rapidly that it was easy to break tops off. Most of my cuttings (many) are from my mistakes in tuck & pull. I had to give up training after week 2 of flower after breaking off 2 more (now flowering) tops while training. Your plant may respond differently as you appear to have a stronger Indica influence in your phenotype. In the end, when to flip will be your call based on growth patterns that you perceive. Main branches are less forgiving as your plant matures, but side branching remains flexible allowing you to train for the 1st two weeks of flower.. If interested, I posted some additional info on my grow with recent pics on Ottermunky's phenomenal scrog of Kandy Kush, at her request. It can be found here:
https://www.rollitup.org/grow-journals/416944-kandy-kush-waterfarm-400watt-hps-21.html#post5710348