Ok guys just got SHIV in

So I have to say Im confused, SHIV even though graphically higher, seems to run better than three.Except when Im in harbours and have ridiculous framerates (7 fps) because of all the scenery, but the water reflects the way its supposed to and the game overall looks great

But as many searches have yielded nothing Id like to ask, what all mods are the top dawg here for SH4??

Id like an AI mod if the AI is flawed, possibley a better GUI since Im ssoooo used to SH3's GWX 3.0 Gui and love it and maybe some eye candy mods? as well as one that has random weather? (Dunno if it was addressed in this games stock, but in SH3 stock, weather would be the same for weeks and needed a mod to be able to shorten it up and make it more realistic and change quicker)

And any supermods?

My game is patched up to date (bought it brand new with U boat missions add on)

Thanks guys