Given the date/time you have and location AR is the best bet, hands down. The state has great riding! The roads lack the curve count of the eastern mtns but are really fun to ride as they have lots of roller coaster style ups & downs and plenty of twisties too. The spring weather is agreeable there in March. Also some very good roads in S MO. I'd concentrate on the NW quadrant of AR & SW corner of MO.AR has some state brochure type material for bikers & also look @ www.motorcycleroads.us.com
for planning. Enjoy!
"If I had my life to live over,I'd dare to make more mistakes next time...I'd relax,I'd limber up.I'd be sillier than this trip, take fewer things seriously, I would take more chances... take more trips...climb more mountains...swim more rivers...eat more ice cream." Jorge Luis Borges, at age 85