[8FS_Bulau]

Of those two, I would suggest the UltraPack, since it seems more geared towards adding additional mods.

For strictly offline play, you may want to look into the SAS Modactivator. They have a very straightforward system, which can be tailored however you like, and since they are only concerned with offline modding, they can do a lot of things that onliners can't.

http://www.sas1946.com/