$5k / 50 mph / 50 mi.
Very... symmetrical.
Totally do-able, except the range target may be a stretch, based on my limited knowledge. You'd likely be able to reach that distance only on a spanky new set of batteries to very high depth of discharge, under optimal weather, road & traffic conditions.
Looking forward to the antics. I see you've got a domain ready to document it all - good stuff.