I know that this has been brought up, but you're way too worried about deficiencies and slight burn issues. It's awesome that you're aware of them, and you should be. You're just going to have them for awhile, especially in soil. In my opinion it's always better to start on the low end and slowly ramp up the nutes, it's easier on the plants. I wouldn't focus so much on trying to correct them quickly, watch your plants and become familiar with them. It's going to take several runs and lots of work. It is very very difficult for any deficiency to really destroy your plants. Controlling your environment is going to be the most important thing about your garden. Heat, humidity, pests, bugs, mold/mildew, those are things that are real potential issues. Tweaking your nutrient regimen is something that should happen a bit later on in your growing career.
Also be careful with the milk thing. I'm pretty sure I understand the premise, but the research is lacking. You're not going to find a commercial garden doing it. In my opinion there is more potential for harm than good.
Don't bang your head against the wall too hard, I know how frustrating it can be at times. Keep growing and keep learning!
