Google adsense for wordpress multisite

Here is my scenario:

I have a server where i want to host 50+ Wordpress websites. Each website needs to have a different domain name (i don't want to use sub domains) and each website must have independent google Adsense code so if something goes wrong due to google's rules the others should not be affected.

So my question is which one is more suitable:

1. Install each Wordpress site in a different directory on the server
2. Use the Multisite function that Wordpress offers

If number 2 is more appropriate i want to be absolutely sure that i can make it work with different domain names and have independent google Adsense codes

10x in advance.

P.S.

If something is not clear with my question let me know so i explain it in details.

via Chebli Mohamed