Hey there so the organic rooting, you can use aloe Vera. Just take a cutting and spread the goo at the tip of a clone clipping or skin the aloe and puree with water to make a smoothie and apply to the whole root zone.Power Organics Mycorrhizal Root Booster is a good prebottled organic booster, if you prefer that way. As for nutrient schedules you can choose any you like and they should work perfectly, its not so much the schedule as the dosage that's important. You should be able to do the desired schedule but begin at 1/4 strength, then increasing to half(or more) based on need or desire. If you aren't already, adding a cup/bottle on top as a homemade humidity dome would help the plants warmth a RH which is so good at this stage. Best of luck. Happy growing.