how many people are you going with or just yourself? if multiple people, I'd suggest buying the fightclub membership ($100). You don't get much with it (I think you get a letter from "Dana", I must have lost mine), but you get a UFC hoodie (which isn't bad actually lol) and presale code for tickets (which you'll get for every live event for the year)
I saved on average $40 + stubhub fees per ticket (was going with me and 5 other people) so it worked out (and everyone just chipped in $15 a piece for the fight club membership so I didn't really come out of pocket for much).
Piss/Get food/go have a smoke in between fights. I've found that sitting about 15 rows up from the floor to about 22 rows up gives me the best view. I sat floor last time I went about 8 rows back and although watching the striking exchanges was great, the grappling esp when it was on the other side of the cage was tough to follow and I found myself looking up at the screen. At elevation, you're able to look directly into the cage without the actual chains in the cage obstructing your view.
Also don't forget to wear your tapout or Affliction shirt to let everyone know you're a true OG and not just some filthy fuckin casual.