Furataka is good for sneak attacks or hit and runs in my opinion, unlike the 3 cruisers above it - Aoba, Myuko and Mogami - it actually has offensively placed torps which can fire relatively forwards so use them to your advantage. Apart from that try and stick with other ships so the attention isn't on you, which is a theme for all the later IJN cruisers so you're going to have to get used to it.
As for the slow reload time it makes good for single volley tactics, you may only have a few guns but that's the same with the Aoba. As such try to avoid going head to head with a cleveland as it will wreck you very quickly, also try to avoid destroyers as the long reload time, little manoeuvrability and lack of a decent secondary armament will put you in a tough place unless you manage to torp the DD; which I have done at short range before he torped me so it is possible.