So - is this what your dash looks like?
You're welcome for getting a picture from Google so that the other forum members have an idea what you are looking at, as you will find that most of them don't actually have one of your particular model of car and therefore don't know what it looks like.
Just a place to start - you know with a picture being worth a thousand words and all.
As for placement, airflow and space, unless you live near a more qualified board member who wants to come help you - that's going to be your journey. We can offer to come up with creative (perhaps impossible) solutions when you encounter problems, but without being there it is hard to know what you need to do and tell you.
So - be informative, stay up to date on progress, and most of all dig in!