I just wanted to give some updates about my progress:
So far I really like working with C++ and Irrlicht but am still working a lot with A7/Lite-C and thus don´t make that much progress.
I wrote myself two classes, one for postprocessing which gives me the same possibilities as the Lite-C stages and one for objectshaders, which allows me to add any shader to a object and with setting the textures and needed parameters automatically.
I am currently trying to get several physicsengines to work with Irrlicht. That is really a lot of fun :P I am done with Newton so far and am now trying to get PhysX working.
The problem I´ve got with newton is currently an fps independant updating, but I guess that I will somehow find a way that works without too many problems.
Here is a simple level with 1000 boxes falling from the air using newton. It is running with about 20fps the lowest is at about 9 and the highest around 70 (in the beginning when nothing collides):


In case you are interested here is a demo application showing bloom using my postprocessing class. I compiled it and Irrlicht on windows and thus this exe will only run on a windows system You also need a least shadermodel 2.0 to see the effect and it does use DirectX for rendering: http://files.filefront.com/PostProcessing+V01+DX+exerar/;10439611;/fileinfo.html