Live CG pro without much experience in MTTs, playing $100 online tournaments? Your ROI might very well be negative. Unless you are playing on US fenced sites. In that case enjoy swimming in money.
In the beginning don't focus on your ROI or hourly, you need HUGE sample size for that to be even somewhat precise. Play at least 50 000 (better 100 000+) hands online and look at your EV winrate (bb per 100h).