Hi,
there is certainly no need for changes, if you don´t want to! It`s your drawing afterall and I know it can be tiresome to update a drawing again and again...
I don´t think you`d need to lengthen the hull any further. Just move turrets A and D a little more towards the bow / stern, while keeping (or even reduceing) the lenght.
The 20,3cm turrets are a bit too much in my opinion. A turret weighs about 250tons and your main armament should be sufficient to deal with cruiser-size surface targets. The firing-arcs of the 20,3cm guns is also very limited at the moment.
Now I think they waste too much valuable weight and - above all - space! Maybe replace them with some 12,8cm SK/L45 DP guns (can be found on the KM Partsheet).
This way you could save some of the ships beam and length. Plus it would bolster her AA defences considerably.
Are the "149.1mm" guns the ones in the small mount (i.e. the four mounts on the first deck)? I am not familiar with those guns, yet if they are supposed to be your medium AA / DP-guns, they might be well enough!
Maybe limit your light AA to 1-2 calibres, i.e. 30mm and 55mm guns. I have redrawn the 30mm MK303 if you are interested.
Well, those are just my ideas. Like I said, you have done a good job already and you don´t have to change anything.
Excuse my English - I hope you get what I mean... If you need any help just send me a pm.
Happy Easter Holidays!
- maomatic -
Edit: Typos!