How old are you? Deadlifting is nuts.
I'm a smaller guy, so I never did it.. but I have friends that are built like trucks (most of them Marines, go figure) that partake.
I did circuit weights in college, but... more of a surf bum than a gym one. I applaud your effort, though... just be careful, bro.
.. when I go to a gym these days, it's for their rowing machine or the sauna.
I know there's powerlifters on here.. we've shot the breeze before.