1st attempt at SCROG

I would like any feedback by people who have done a SCROG grow, what is the best type of mesh ie Metal Chicken wire, or a nylon mesh (where you can make larger holes where you need it). I am growing in soil for the 1st time indoors and it is looking good, a question about nutrients, I am in an Australian small country town so there is no local Hydro store just down the road, and I do not trust our local postmaster "small town Chat Chat", so I am making my own flowering mix. I am aiming at Nitrogen 4% Phosphorous 8% and potassium 12%, does that sound right. The plants I am growing are white widow and bigbud, I let them veg for 4 weeks on a 20/4 cycle then went to a 12/12 cycle the photo's attached are day 13 of flowering, as you can see I have been training a few plants to make a complete canopy and have just started to remove some of the larger shade leaves. Outside I leave them on until they just drop off but under lights they were blocking light getting to the bud sites. I am using a 1000W HPS with a chinaman hat reflector, I am in a fortunate position where I dont have to use a tent I have a whole room, That I want to eventually have two or three lights, and a light proof cupboard for clones and another room for the mother plants. I suppose thats enough for the first post, would love to hear other poeples experience's with SCROG and using their own fertilizer mix.

I just take nylon string and make the screen as the plants grow.
You will want to reduce that nitrogen after they finish going thru their stretch.. Keep a watch on that wire, make sure it doesnt cut into any of the limbs as they grow.

You need to start tieing those tall limbs over before the stems get too hard.

thanks for the good advice should I train and weave thru the net the main stem, you think no nitrogen during last 6 weeks of flowering is a good idea, by your pic you know your stuff, how long have they been flowering and what strain are they. Again thanks