I would agree, though would state with #4 that if your hams and glutes are not strong, creating balance, you will find your back issues more frequent. While I have not seen or read any studies to support my hypothesis, I would argue strong overall leg development, quads, hams and glutes will improve your deadlift greatly.
David, Husband, Father, Pastor
(Yasen Miroslav Zavadil)
Getting focused to get better.
"If there is nothing you can improve on, your standards are too low!" - BAMA Strength Coach Scott Cochran
1Co 9:27 But I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified
My training Log