Vlad:
Just coming across this thread now. I will watch with eager anticipation what you do with the Aoshima HMS Kent kit. But so far, looks great!!!
A few years back, right after the Aoshima kit was released, I sat down and tried to figure out what it would take to convert a kit of HMS Kent to an HMAS Australia circa 1941-1943 using photos of HMAS Australia available on the internet and in various published reference works. Here is my list of modifications--which you might find of use:
1) reduce height of turret bases to match broadside photos of HMAS Australia
2) reduce height of catapult turntable to match height of turntable in broadside photos of HMAS Australia
3) create single latticework searchlight platform for placement aft of catapult
4) raise level of flag deck platform aft of bridge
5) raise height of funnels
6) reduce height of lowest level of bridge
7) remove weatherdeck amidships

alter foc's'l deck forward of breakwater to wooden planks (don't know why this smiley is showing up instead of the number eight)
9) produce new ADO platform (forward main gun director platform) atop bridge to a wedge-shaped or faceted front face (more research is required here--its appearance may have changed over time)
10) remove weather deck and add splinter shields for 4" HA guns
11) add long walkway/catwalk from flag deck to aft pom-pom platform
12) add searchlight platform athwart or wrapping around the forward funnel (configuration is not clear from photos)
I also found the following drawings online for planned alterations as part of her late war refit, though I cannot recall which website I found them on, and will remove them if there are restrictions on their use elsewhere. There might be details here that you might find useful:
Attachment:
HMAS Australia 13.jpg [ 565.87 KiB | Viewed 895 times ]
Attachment:
HMAS Australia 14.jpg [ 462 KiB | Viewed 895 times ]
Anyhow, hope this helps!
Best,
Mike E.