Some more things to consider:
- road signs will be in French; ensure that you understand what things like 'cédez le passage' or 'Le sens unique' or 'Priorité Pieton' mean
- speed limits and distances are marked in kilometres
- sometimes one is required to stop in a roundabout to allow incoming traffic to enter
- 'highway' signage is not like in America ie they do not list all the upcoming towns/cities
- gas is about $10/gallon at the moment in France
- I don't street park in France if I can avoid it; 'parking' means shoving the car into any free space even it it sticks out a metre, or crosses a line, or leaves other cars unable to pull out again
- rental rates can be high; the cost of a few days rental, plus parking, plus gas can easily exceed the cost of a taxi from the hotel to CDG and a train ticket (depending of course on how many people are travelling)
- the roads could be slick in winter or worse; often with bad fog
- it will be dark early so you will need to be prepared to return in the dark (and possibly leave in the dark in the morning as well)
Please don't take my comments as harsh, but I do think that you are overconfident in your statement. I have driven
many places in the world worse than the LA freeway system, and many places in the world I simply do not drive.
If I can navigate L.A. freeways, I'm hoping I can handle the roads in France. I can't imagine any other place on the planet where driving can be as much of a challenge as the L.A. freeway system.
I have driven a Citroën 2CV in France and on the German Autobahn, have for decades driven the mountain roads of Germany/Austria/Italy, I have lived by the most dangerous stretch of the Autobahn, driven on 'highways' all around western Europe, and still find France the most difficult challenge for driving.
I recently had an American with me, and she could not make sense of the road signs and rules of the road as she found them so different. Yes, we drive on the right, but that doesn't mean that you will find it easy.
I just want you to understand what you will be facing, as you sound a little confident for someone who has never driven in Europe and who has only been there once. As you don't 'know' me, I travel all over the world, about 300 days/year and rent cars almost weekly, unless I am in places I know are not the best for driving. And in France that means that I don't ever rent a car in the Île-de-France.
Ultimately it is your decision, but one that you should weigh carefully. The worst thing would be to find yourself with damage to the vehicle, or worse, while on holiday.