Just for your information – and eventually that of other newbies (this is not meant to scold you) – your last post is a perfect example of why one needs to prepare and, in the case of a total beginner, more than anything this means to seek advice BEFORE embarking on a project.
For example, you write: "I also just noticed that my DP is working in PAL. Yikes. Another issue. So while we have a similar vision, it's the technical aspect of things that are a bit overwhelming at the moment." Case in point. Any one who's ever worked overseas would have known that this is an issue that would present itself for a US_based person working outide the US.
Being a non-technical person (as well as the fact that you don't want unnecessary details to get in the way), I will try to limit my exploration of this topic to minimum vital aspects. The US uses an analog TV system called NTSC, France uses SECAM and almost everyone else (excepting Japan) uses PAL. All you need to know is that PAL has a better image compared to NTSC (it has greater resolution because each frame has 625scan lines vs 525).
This "problem" leads to several options. You may want to shoot everything in PAL and only after your final edit, convert your completed project to NTSC. Or, you might shoot PAL this time and NTSC next time around.
Converting video from PAL to NTSC, if at all necessary, is no longer a big deal. Today, if you really needed one, you could buy a cheap converter, otherwise, if you just need to convert a few minutes worth of tape, you can rent or go to a company that provides the service.
The PAL vs NTSC issue was a major concern in the days of analog TV and the early days of digital, but is hardly a big deal, especially with regards to HDTV.
First of all, if you'd been shooting in HDTV, most (or all, I honestly don't remember) videocameras have a switch that allows you to shoot in either NTSC or PAL. I see from your post that you're not shooting in HDTV, otherwise your DP would have told you about the possibility.
Also, the SONY PD170 will give you a 4:3 image and I'm not sure that this is the best way to start off a new project. I'm still shooting my current doc on 4:3 aspect ratio because I'm using a videocamera that I have been using for 7 years now and, especially, because I started shooting it this way 3 years ago. I think you might be best off shooting in native 16:9 (I'm referring to the fact that all modern TV screens have a wider image).
By the way, have you thought of asking your DP to rent a HDTV videocamera? They are easy to find here and that would allow you to overcome the PAL/NTSC issue. Furthermore, have you talked to anyone about whether or not – in consideration of a particular kind of future use – you might want to be shooting this project in HDTV?
In any case, if you decide to edit using Final Cut Pro, you'll be able to edit using both systems, so you'd only need to convert edited segments at the very end.
I'm sure others here who are used to working in the NTSC world can give you all the necessary advice and, luckily – as I wrote – today this is only a minor problem. Again, a good example of X other problems that could be solved, or better yet avoided, by talking to the experts BEFORE you jump.
Unfortunately, the equipment we use to day is so simple that anyone thinks they can use and, as a matter of fact they can, point and shoot. Period. Documentary filmmaking is something completely different.
To make my point clear, in many countries today, almost everyone has a videocamera, so in our minds it has become a simple ubiquitious instrument, almost like a ballpoint pen or a pencil. Everyone could afford a pencil but that didn't automatically make them a Michelangelo or Shakespeare.
Enthusiasm is great but remember that documentary filmmaking is a very complex craft that deserves a little bit of respect. Just because it's cheap – or at least a lot cheaper – than before doesn't mean that it is easy. In fact, in many ways, the possibility to work solo, or in small teams has made projects cheaper and, therefore, in many cases more feasible and it has opened up to the masses a world that was previously reserved to very few people and power centers (this is the more interesting aspect of the so-called "digital revolution") but it has also made things a lot harder than they were before because you need to know learn many skills and perform all of them well.
Also, appropriate research could allow you to find out that it might be better to plan your trip at a time that allows you to shoot a certain popular festivity or activity that takes place at a given time of year, etc., etc.
Regardless of how easy or cheap it seems to fly to Italy to do whatever you want to do, remember you don't want to be wasting your precious time and/or your own hard-earned money unnecessarily, as well as the fact that – even though you might not be aware of it now – you may have a one-off chance to shoot certain events or people (for various reasons) and you need to do it "right" the first time.