https://www.icmag.com/ic/showthread.php?t=152361 <-- I am going to try to follow this guys nute schedule for pure blend pro. Thats where i got the idea of Pure Blend Bloom to promote rooting. A few other people have suggested to not give them any nutes till a few days a after transplant so i'm kinda tossed up on what to do now. I just know there is not much in promix so i thought some nutrients at transplant would benefit overly hungry clones. I'd heard great things about Roots Excelurator. Super pricey though.
Everyone has advice based on what they know works for them. Personally what i do for clones is start them in a dome (1" rockwool) with tap water. Approx 3-4 days after they show roots i plant them in the medium and start feeding them 1/4 strength veg feed (approx 250-500ppm) for 2 weeks. After 2 weeks, i feed them only 1/2 strength (700-800ppm) veg til they go into flower.
They dont really need a whole lot in veg, but they do move fast. What i've found is best, is to find something simple and keep it consistent.
As far as feeding during transplant; its up to you. But watering after transplant will help the roots settle into their new home. So whether you decide to add nutes to that initial water is up to you. I think the reason most ppl wait to add nutes when transplanting into a new type of soil, is to make sure that the Soil+Nutes combo wont be too hot for the young girls. however, from what i know about promix, i dont think it is very "hot." that combined with the fact that your plants look really hungry, i would probably transplant and water with (out of your list) Pure Blend Grow, Liquid Karma, Hygrozyme; and foliar feed (at night) full strength with aquashield. Also i would probably water with 1/2 strength of the max concentration recommended on each bottle.
Out of everything you listed, I actually think that hygrozyme will be the most beneficial for your roots. I believe Cal/Mag should only be used if you need it (your plants arent showing signs of mag deficiency). And the less nutes you use per feeding is less money spent in the long run (so i wouldnt feed bloom til bloom).
Just my 2cents. hope it helps
-St