User blog comment:BasakaNZ/Thoughts and musings on effective ship levelling/@comment-24161900-20131216162401

So after managing to get my Kiso to 65 using 4-3, i'll share my setup that gets through the map easy and gives her mvp a good 80% of the time.

Flag : Kiso, I used 2 Type 3 sonars and a type 3 depth charge. (She crits subs for 80+, LOL. Stack as much ASW equipment on your flagship as you can, as you will need it for MVP on the submarine nodes.)

Torp sisters, standard setup.

Kongou kai 2/CVL. I experimented with this, and both are ok in my opinion. CVL's can hit normal subs and at least damage them heavily or sink them on occaison. Having a BB almost gurantees an S rank in day battle, at the cost of slightly more fuel, due to the 2nd shelling phase. (If you take a CVL instead of a BB here then you can put more torp bombers on for node J if you happen to land there.)

CV with Saiun : This prevents T-crossing. I filled the other slots with a single Ryuusei Kai and 2 Reppu, since J node can spawn up to 3 carriers, and having no interceptors in fleet will land you in a world of hurt + a lot of lost bauxite. If you happen to land at node J, Torp sisters + BB can hopefully sink a good portion of the fleet and avoid most of the damage.

Verniy, a SINGLE type 3/94 charge. This lets her sink submarines easily, but won't out damage your flagship, hopefully. Put her as the BOTTOM ship on your fleet, because of 2nd round shelling order.

Overall, i find 4-3 to be much more fuel efficient per xp point than 3-2 grinding, and it doesn't fatigue as often, which is very nice. I almost never had to swap any of my girls out because of fatigue.