I've always wanted one. What's the details on your XR? How's it do for general purpose riding? I'd love to have one to ride to work on. (40 miles one way)
I daily mine, its been fantastic, they were built to run hard in the Baja 1000, therefore i have no problem justifying regular oil changes for my style riding every 1000-1500 miles, just making sure i check oil levels often, its a reliable and powerful bike, really fun, mine is uncorked with full FMF exhaust and "uncorked", makes somewhere around 55hp, and quite torquey too, it lofts the front wheel up no problem with just a blip of the throttle all the way up into 3rd gear especially since i swapped the CRF450 forks on, i haven't tried it in 4th yet.
if the speed limit is 60+ for your 80 mile daily drive then i would make sure to keep an eye on the oil, other then that though it should do great my daily commute is just under 40 miles round trip.
mine is on craigslist for sale by the way
http://atlanta.craigslist.org/atl/mcy/5482819557.html
in case you were interested