cockpit changes for my fixie

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I'm changing the cockpit of my fixed gear to a more upright position when carrying a messenger bag, but I still want a comfortable semi-drop position for club rides. My fixie is a 1980s road frame, Phil fixed/free hub with Cinelli bar/stem now.

What I want is something like this: http://www.fixedgeargallery.com/mauceri1.htm

I have a Nitto Dirt Drop stem and will look tomorrow for a Nitto road bar that I can flip and cut the ends off (the Cinelli doesn't fit). But like the inspiration fixie above, I want mountain bike levers, probably old ones meant to pull cantis because I'm using road brakes (Campy Deltas for now).

Will I run into a problem fitting mountain levers on a road bar? Any lever recommendations?

Are there two-finger levers available? (It would be nice to keep the tops uncluttered).

Will cutting the bars compromise their strength/safety? (Bar recommendations are welcome, too!)

Thanks, all. More questions later, I'm sure :)