Hi, I'm a noob in a very similar situation, though not completely identical. I'm 5'11 and about 250. Even at 330, I don't think you need to be overly concerned about your weight breaking the bike or something. In any case, front suspension is really a device geared toward reducing shock on your arms from going over bumps, cracks, potholes, etc. If you are looking at riding on almost exclusively paved roads, then you may not want the suspension feature as - to my very, very, very limited knowledge of current bikes - it tends to add a bit of weight to the bike.
My situation is *slightly* different in that while I too am looking at riding mostly paved roads, I'd like to just have the option to hit a dirt trail now and then. Plus, Philly's roads are not always in such hot shape - particularly in Center City. So I'm strongly considering a hybrid like the Giant Roam 2. Definitely a little above your noted price point, but at least I'm with you on brand (Giant's specs seem a bit better than other brands' offerings at the same price point - I'd have to go up $200 or so on the Roam for an equivalent offering from Trek or Specialized). So at least on paper, I like Giant and am enthusiastic about taking a test ride of the Roam 2.
I used to bike heavily in my youth, but I've been away from it for so long, modern bikes are quite alien to me. But seemingly the crappiest of them seem better than the high-intermediate quality stuff I was riding 20 years ago.
One cool feature of the Sedona DX you're considering is that it has a lockout feature for the front suspension, in case you ever want to shut that down to ride on smooth pavement. One example of a feature Giant seems to offer consistently at lower price points than the competition. I'm not a Giant shill either, just a guy window-shopping bikes... If you decide you maybe want to do without the front suspension, you might want to take a look at Giant's Escape line:
http://www.giant-bicycles.com/en-us/bikes/model/escape.3/14810/66193/
http://www.giant-bicycles.com/en-us/bikes/model/escape.city/14810/66194/#features
or the Cannondale Quick line:
http://www.cannondale.com/2013/bikes/recreation-urban/recreation/quick-sl/quick-6