Kamikaze R. Fujin. Kamikaze. These are enormously successful ships, yet they're all one in the same, just with a different paint job. Were it not for the Gremyashchy, they would be the best destroyers at tier 5 without question. It's not hard to see why. They're quick. They're stealthy. They prey on poor new players who haven't discovered WASD hacks. There are few things as frustrating for a Battleship player than to be stalked by one of these three sisters. Wargaming have officially announced that these ships are going the way of the Gremyashchy and the Imperator Nikolai I. As of January 20th, 2017, they will no longer be available for purchase and you're unlikely to see them being offered in contests. This the last chance to reliably acquire one of these relics. Let's take a look at why Wargaming is removing them.
Absolutely. The Kamikaze-class over performs by a significant margin. This makes her an ideal craft for training Captains. With the proposed changes coming in 0.6.0, this would be a perfect ship to help train your other commanders.
She is immediately superior to both the Minekaze or Mutsuki. Her only drawback will be that she cannot deal with enemy destroyers very well. Still, she will make a good choice in a competitive environment, so long as your respect her weaknesses.
Out of the three Kamikaze-sisters released so far, this one at least has some historical merits as she has the name of a real ship. She had a distinguished career, including surviving a surface action against British destroyers and surviving the war. For World of Warships veterans on the NA server, she's been a bit of a white whale -- available on other servers but never here. For those who own the Fujin and Kamikaze R, I'm sure there's a temptation to "complete the set". I know that urge bit me.
I cannot recommend her strongly enough here. This is a very fun ship, so long as your conscience lets you club baby seals without emotional pangs. I'm Canadian, so clearly I see clubbing baby seals as acceptable.
You'll find that for most destroyers, the Preventative Maintenance + Last Stand + Superintendent + Concealment Expert will form the core of their first skill choices under the new system. There will be exceptions but the Kamikaze-class really isn't one of them. From here you can build to your preferences.