No worries Paladin, he won't like it. I've ridden that stretch on plenty of bikes, used to live a block and a half off US 90 in Long Beach MS. He'll LOVE being on something big enough to handle the horror show that passes for an interstate or a US highway. N.O. to Biloxi is BAD, Biloxi to any point eastward is WORSE.
My bike came from Suzuki City in Biloxi. 2 weeks later it was on a 2 up trip to Baton Rouge, from then on it saw Mobile several times, Dauphin Island, two trips to the L'il Sturgis (MS) rally, Pensacola... we moved to TN and it saw lots of west TN, east AR, west KY, north MS, north AL... Hauled it out west and it saw lots of mountain roads. Hauled it back to TN and haven't ridden it once in the 2 years we've been back, but, it's almost back together.
What passes for federal roads in this part of the country wouldn't make it as a goat path out west...
Doesn't matter what bike you ride, the coast roads are horrible. But where a Savage will break the rear tire loose the HD is heavy enough to just roll with the punches. It's like wake hopping with a skiff or wake crushing with a cabin cruiser.