How many grows have you had? You can do this with this light, you can do that with this. Just grow...you will find out all the things you didn't know once you have done it..three or four times
I have been growing for 15 years and I still can't get it right, but you keep getting it better
I like this honesty Thunderrod

Ive been growing about the same amount of time and I still make mistakes... not because I don't learn or know but because I always experiment and push the boundaries

You have to know the rules before you can break the rules imo
For the OP,
I dont beleive you can really go overkill with ventilation. You can have possibly too much in terms of efficiency, but unless you can match the airflow of the outdoors... then the more the better. Tradeoff being power/sound or space
It's great that you research the life out of everything, even though sometimes you are sure that you know precisely what you are going to do only to read just one more thread or see one more photo that changes everything... it's normal ^^ lol
You just need good simple advice and then just start growing... you will learn more from growing yourself than any forum.
Read, but try to work things out for yourself instead of asking every question and having it validated, you will feel even accomplished

Once you begin to learn how 'his' grow is different to 'your' grow, you will understand why forum advice is just a guideline
Like I said, just find a nice simple way to grow, learn from your experiences, then try new and better methods and see if they work for you... that is the fun of growing, you can do it forever
Cheers Jimmy.