Join Date: Jun 2019
Location: Savannah, GA USA
Welcome, Sean! I'm very close to your size, at 6'1" 235lbs. I bought my 390 Duke as a fun, short-run commuter. It fits that role beautifully. I, honestly, haven't ridden a better bike for the job. The 390 is ridiculously light and nimble. Sure, guys our size will suffer a bit of Circus Bear Syndrome. But really, in the saddle, the bike fits me extremely well.
My concern is your intended highway usage. Personally, I consider 400 class bikes the minimum necessary for highway riding. And, then, only in short, "have to", circumstances. As a big guy, I don't like the stability of the 390 at high, sustaining speeds. And, I certainly wouldn't recommend it to a beginner. If I was gonna do that much interstate work, I'd want something with more mass/motor/wind protection. Think MT-07 or 600 sportbike, at least.
2018 390 Duke