the sequence will be flowing and straight-foward, telling the story from an outsider's p.o.v (the narrator); and so literally cut from many still shots, but only to create a sort of "flowing" motion to it.
I would like it to have a sort of easy-going rythm,
Mind that if you have many shots intercutting with oneother, you might not get such a "flowing" atmosphere. The cuts cut the action, not make it "flow" (if I understand you well)
each shot has to be justified somehow, by what it shows. if you cut and move the camera from one place to another, it's usually because you have to change this location to show us what you want us to see... unless you want somekind of speedy sequence, with many short shots, but I don't think it's what you wanted.
One thing I wonder about, as you don't say it clearly is if your caracter is walking or not
Then, when you ask
where do I put the camera? do I attach it onto the actor, and if so how? etc.
The fact that the guy's walking or not is a major parameter here right ?
The main question
where do I put the camera?
is actually a question nobody can answer but you. If you plan to do it as a "filmmaker" I consider it is actually even may be the only thing that you and nobody else should know.
But you see that if you put the questions the right way, even just put them, then answers will certainly come to your mind easier...
At this point what you may do is just imagine what you see on the screen. Then it will be the very starting point of it.
So, what do you see ? And when does he light his cigarette ?
You see, I think that a major difficulty for beginners sometimes is to imagine what they'll see on the screen. When you've done it's much easier.
But you only can imagine that after you have very carefully precised the action in its very details...
What do you see ?