Hi there ikkvr,
Firstly I've moved this to Learning to Win for you, seems more appropriate there.
Secondly, I don't use a hud very much, it depends on my mood but if it's a new limit I'm at there isn't much point, or if dropped down a limit for whatever reason, I'm not bothered there either as I don't expect to be there long enough for it to matter.
Study the villains and take notes, lots and lots of notes. Every time you get to see a showdown I bet there is something noteworthy like bet sizing etc., even if the hand didn't involve yourself, take the note anyway.
This may mean cutting down on table numbers for a while until you get used to it all, but better to have quality rather than quantity is my thinking.
I hope that gives you some ideas, but I expect others can add more than me.
Have fun and see you at the tables!
Mal.