You're probably going to get mixed reviews on the secondary, but I think the general consensus is there is no need unless you're planning an extra-long fermentation or throwing in some adjuncts (fruit, coffee, etc...). As for the sugar, I haven't done kegging yet, but I've done some reading and you can do sugar or force carb your keg from what I've read. It's a matter of preference and what you have for equipment.
Check out my blog!
On Tap: Raspberry Saison, Honey Mango Blonde, Belgian Wit with orange peel and heather tips, New England Style IPA
Primary 1: Empty
Primary 2: Empty
Primary 3: Barrel Aged Old Shredsputin
Primary 4: Bourbon Barrel Conceited Dick
Secondary 1: Nirvana on Cedar (a Utopias inspired brew)
Secondary 2: Nirvana on Oak (a Utopias inspired brew)
Secondary 3: Ginger-Peach Melomel