Honestly I think that the IJN ss5 isn't that bad. It is very good with 3 engies and 2 reps. The TBs that are equipable withe the kai kou is pretty nice. The only thing is you have to come up to recover the planes. The air is reasonably long and its durability in general is great. The OH speed is very good to, it goes about 35 OH and its like a Vickers with more DP, firepower and its able to launch TB. If you dont like the lack of rear torps thats why you can  critical dive
:D.