Internal storage will share with your favorite apps. Some apps will work in *root/system/data, some app will not work and will bootloop. And you can remove some useless app from your system. Ex: youtube,themes, unused sounds, wallpapers.
So you can increase your internal storage from root/data if you move some apps to root/system/data.. Example, i moved aquamail to system (this app will work in system) ... It gives 5 mb from my internal data storege. Easy ha ?
And always do nandroid backup before playin system. It will increase your learning.
---------- Post added at 10:33 PM ---------- Previous post was at 10:28 PM ----------
And your custom rom has status bar bug, it is really nice port, very smooth and lagless.. But this bug realy annoying me, so you can use auto lux app.. It can calibrate your screen brightness.