to FRF! We're glad to have you.
Looks like the Rockwood is a tad lighter and has a bit less GVWR than the Flagstaff. As far as colors, I wouldn't touch that at all. You should leave that up to the DW.
Since you're in New York and if you plan to camp in the cold, I'd want the electrically heated holding tanks and additional insulation. I'd also get the 15,000 btu A/C.
Your Ram should tow either one fine. I would definitely upgrade to a better sway control. You won't go wrong with the Reese Dual Cam. Be sure to get it set up correctly and you'll love the way it tows.