I used to grind 5/10 fl sh a year ago...
Switched to NL and really like it. Although it's completely diff game i had no real problems to play NL50 from the beginning, so whatever you've learned in FL is essential here also.
- The only real difference is tilt. It's much more difficult to recognize it in FL, but it's much more dangerous in NL - you'll spot it pretty quickly but it can be too late already
- stoploss is necessary in the beginning IMO
- hourly rakeback sucks
- position is the key.. it's important in FL too ofc, but not that much
btw: dont play FL & NL at the same time unless you feel superconfident i both.. I remember stox's video where he played 2 mid/high stakes fl tables and 2 nl, but that's not for everyone
Good luck!