For your size and weight I think the DR is an excellent choice. Be sure to see the big DR thread here, and there's drriders.com, and the DR FAQ on thumpertalk. For vendors that'll cater to you, there's procycle and keintech. I always buy gently used bikes to save money, but I can see why some folks choose to buy new. Isn't Suzuki offering 0% interest on financing right now?
'08 DR650, '13 TU250X