Wubba? Why corpse explosion? I would just put one in that and let item skill bonuses improve the radius. Once it's up to a radius of 6 it seems good enough to me. I agree on the curses though, although if he decides to go poison, he'll want lower resist.
20/20 raise skeleton/mastery and +1 summon resists is good enough to take you to Hell by itself and you still have plenty of points to play with. It's an awesome build, but skellies are pretty worthless in high level PvP.
If you've played through the game with other classes, you'll feel like you're taking a much needed vacation. The most stressful aspect of it is making sure you don't miss any good items when your skeletons run off in all directions and kill stuff offscreen. It's like having an XP bonus because your skeletons will find everything a normal character wouldn't even know was there and kill it. As you start facing tougher opponents Amp Damage will reduce them to canon fodder in a hurry and decrepify will greatly increase the survivability of your skeletons against the toughest opponents.. It truly is stunning just how few points you need for them to take you all the way through Act I.
Where to go from there is up to you. I'm working on a build like this with maxed poison skills (it only takes 60) running under the theory that I can make up for lost skelimages with my own poison Nova and have a pretty strong PvP option for fun.