My HUD is as follows:
VPIP/PFR/Hands
3bet/fold to 3bet/attempt to steal/AG Factor
cbet f/fold to cbet/raise cbet/something else related to cbetting that I can't remember.

I think all of these stats are pretty important and you just really have to find where to stick the boxes on your table and get used to them being there. Granted I am usually only tiling 4-6 tables and if I am playing more I stack underneath those original 4-6. Tiling 10+ makes it way too cluttered on my 21'' monitor with all the stats everywhere.