Matteo I have the same situation. Out of the few models I was able to simulate some time ago, the results were different from the software I am using usually, so really I don't know where to go with the development, but we will see!
Variante, you might have built a killing machine, we don't know!
If I can give you an advice, it would be to go to OCCFD as soon as possible to avoid surprises (like Matteo and me). I find it hard to see how internal flow is managed with OCCFD so I am leaving this on the side, I just concentrate on putting the inlets/outlets in places where they will not interfere with the flow rather than using them to my advantage.
Like Matteo, I am not that happy with my model, I tried to go with a design that was different with what we usually see in LMP1, but I think I haven't been able with this version to achieve what I was hoping. There is scope for improvement of course, but my initial tests were not that fantastic.
But as they say, its never over until its over, especially not what it hasn't even started, so let's see, I can't wait to see people's designs!