I've heard a lot of noise about the limit tables being particularly juicy.

I've played some limit a while ago - but...

some background:
No limit I play 100nl on a deep bankroll. I do ok multi-tabling but have recently dropped back to 10-13 tables cos i can pay more attention to lines etc. I played micro-limit when I started the roll creation from $200 late last year. I switched to no-limit cos at micros the money is almost all dead.

some questions:
what are the main adjustments i should make moving back?
what should i be particularly careful of?
thoughts on how many tables i should play?
stakes?
what other stats become useful in a HuD? stats that i'd ignore in nl but that may become interesting due to the fixed bet sizing thing..
at what stakes am i going to be completely out of my league?

anything else!?!?!?