Looking great. I run the same light and nutes. I had my light about 25 inches with veg spec only on it was my first time using the 192x3 and some plants were still squatish. I switched to both specs around day 18 I think. Next go around I a try starting at 35-40 but that's just my opinion. I think you'll love the light though I know I do.
edit: it still grew and produced great plants In a 4x4 all plants around 1.5-2.5 ft but I like me to starch more in seedling growth I enjoy tall plants