Vatek: SH3 Commander--don't leave port without it. A great mod.
My advice would be this; Use GWX and SH3 commander, they're great mods together. Then get some patrols under your belt. If there are still parts of the game that you don't like, then you can find specific mods that might fix them or, god forbid, you start modding your own game
Cheers,
J