Today's "Filthy Fifty" upper body focused workout

Here's what I'm planning:

50 pullups
50 pike pushups, feet elevated
50 BB rows, 60 lbs
50 close grip pushups
50 DB 1-arm rows, 30 lbs
50 t-pushups

Any guesses as to how long it'll take me? Hopefully not as long as it took my MIL to complete the Los Angeles Marathon (just under 8 hours, God love her), but possibly not a lot less :) This will be tragic, but whatever. If I don't know where I am, I can't know whether or not I've improved, right?

Edited to add: It took me just under 40 minutes. It just about killed me to do what amounted to straight sets of each exercise instead of supersetting; if I'd done that I'd have gotten through it much more quickly. I was practically twitching during the 1-arm rows in particular, because I SO wanted to start in on the left side while my right side was resting.

The pullups in the beginning just killed me, because even on a good day I can't get more than six quality reps without having to take a break. I was figuring on that basis that I'd need a good 10 minutes just to get through that part of the workout, and that was about right. Still, when you consider that even a couple of months ago I wouldn't have contemplated doing this workout without a band to assist me on the pullups, it's not so bad.