This is way too many questions for one thread, so I'm going to lock it before it turns into a trainwreck.
Please take your bankroll and winrate questions to the official
Bankroll, Winrates and Finances thread.
Please read the
threads in the stickies on converting from online to live. Then please bump them with questions they don't answer sufficiently for you, or if the question is threadworthy, start a new one with one question.
Very generally, you'll have to tone the aggression WAY down. SDev for winning LLSNL players varies wildly, with about 100bbs/hr being very common, but numbers from 50-200bbs/hr being reported. Generally live is much swingier than online full-ring, but not HU.