1. great info
2. good info, but only if you have no EC meter, and are a newb. (some nute recipe's are too strong, but that requires a brand to brand evaluation.) good advice for the 1st week of nutes in veg, and after transition. Acclimating the plants to the nutes is a good idea.
If using 3 part...use what is directed unless you are using alot of additves. Some additives raise the ppm levels, some don't.
3. hmmmmm, although it is a good idea to let your plants tell you when they need something...you should know that it is a proven fact that :consistency, i.e. a schedule, provides you with the greatest chance of big yields.
4. Excellent...leave your seedlings alone..never touch your seedlings!
5. RO or distilled water is best, but yes you can leave it out overnight to evaporate unwanted salts. If you must use tap water...then buy 3-part for hard water...
6. I don't germinate...I plant seed in a rockwool cube/rapid rooter for hydro or in dirt, peat, etc., then I put under fluoros. I believe that when you plant a seed in the garden, there is light. IMO
7. Right! Find out what get's "YOU" good results and stick with it. I have had more mediocre grows due to experimentation...so when I tell you something...I have done it!
8. Actually, water droplets will act like a magnifying glass and burn spots in your leaves. Be careful about foliar spraying period...do not use foliar feeding during flower.
If you purchase a mister...It is possible to foliar feed.
9. hmmmmmmmm
10. Well I have a room or 2 or 3 so I can have lunch with mine if I want. LOL

good start...At least you are aware of good ideas, mostly. Keep it up, you are on the right track. peace